java.lang.Object
- org.apache.ignite.internal.util.IgniteUtils

Direct Known Subclasses:

U
```
public abstract class IgniteUtils
extends Object
```
Collection of utility methods used throughout the system.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static interface IgniteUtils.InterfaceSupplier
Explicit class for Supplier<Enumeration<NetworkInterface>>.

Field Summary

Fields
Modifier and Type	Field	Description
`static DateTimeFormatter`	`DEBUG_DATE_FMT`	Debug date format.
`static String`	`DELIM`
`static Long`	`DFLT_MAX_CHECKPOINTING_PAGE_BUFFER_SIZE`	Default minimum checkpointing page buffer size (may be adjusted by Ignite).
`static boolean`	`DFLT_MBEAN_APPEND_CLASS_LOADER_ID`
`static Long`	`DFLT_MIN_CHECKPOINTING_PAGE_BUFFER_SIZE`	Minimum checkpointing page buffer size (may be adjusted by Ignite).
`static String`	`DFLT_USER_VERSION`	Default user version.
`static Field[]`	`EMPTY_FIELDS`	Empty fields array.
`static int[]`	`EMPTY_INTS`	Empty integers array.
`static long[]`	`EMPTY_LONGS`	Empty longs array.
`static String[]`	`EMPTY_STRS`	Empty strings array.
`static UUID[]`	`EMPTY_UUIDS`
`static long`	`GB`
`static byte[]`	`IGNITE_HEADER`	Network packet header.
`static String`	`IGNITE_JMX_REMOTE_PROPERTY`	JMX remote system property.
`static String`	`IGNITE_LOG_DIR`	Ignite Logging Directory.
`static boolean`	`IGNITE_MBEANS_DISABLED`	Ignite MBeans disabled flag.
`static String`	`IGNITE_PKG`	Ignite package.
`static String`	`IGNITE_SUCCESS_FILE_PROPERTY`	Success file name property.
`static boolean`	`IGNITE_TEST_FEATURES_ENABLED`	Ignite test features enabled flag.
`static String`	`IGNITE_WORK_DIR`	Ignite Work Directory.
`static IgniteUtils.InterfaceSupplier`	`INTERFACE_SUPPLIER`	Supplier of network interfaces.
`static String`	`JMX_DOMAIN`	JMX domain as 'xxx.apache.ignite'.
`static long`	`KB`
`static String`	`LOC_IGNITE_NAME_EMPTY`	Empty local Ignite name.
`static DateTimeFormatter`	`LONG_DATE_FMT`	Long date format pattern for log messages.
`static String`	`MAC_INVALID_ARG_MSG`	MAC OS invalid argument socket error message.
`static long`	`MB`
`static int`	`NUMBER_FILE_NAME_LENGTH`	Length of numbered file name.
`static DateTimeFormatter`	`SHORT_DATE_FMT`	Short date format pattern for log messages in "quiet" mode.
`static String`	`THREAD_DUMP_MSG`	Thread dump message.
`static int`	`UTF_BYTE_LIMIT`	String limit in bytes for `DataOutput.writeUTF(java.lang.String)` and `DataInput.readUTF()`, that use "Modified UTF-8".

Constructor Summary

Constructors
Constructor Description

IgniteUtils()

Method Summary

All Methods Static Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`static Socket`	`acceptServerSocket(ServerSocket srvrSock)`	Invokes `ServerSocket.accept()` method on the passed server socked, working around the https://bugs.openjdk.java.net/browse/JDK-8247750 in the process.
`static void`	`acquire(Semaphore sem)`	Acquires a permit from provided semaphore.
`static int[]`	`addAll(int[] arr1, int[] arr2)`
`static <V,C extends Collection<? super V>> C`	`addAll(C c, V... vals)`	Adds values to collection and returns the same collection to allow chaining.
`static <K,V,M extends Map<K,V>> M`	`addAll(M m, Map.Entry<K,V>... entries)`	Adds values to collection and returns the same collection to allow chaining.
`static <K,V,M extends Map<K,V>> M`	`addAll(M m, IgniteBiTuple<K,V>... entries)`	Adds values to collection and returns the same collection to allow chaining.
`static Collection<Handler>`	`addJavaNoOpLogger()`	Adds no-op console handler for root java logger.
`static boolean`	`addLastCause(@Nullable Throwable e, @Nullable Throwable cause, IgniteLogger log)`	Adds cause to the end of cause chain.
`static String`	`addressesAsString(Collection<String> addrs, Collection<String> hostNames)`	Returns string representation of addresses.
`static String`	`addressesAsString(ClusterNode node)`	Returns string representation of node addresses.
`static <T extends Throwable> T`	`addSuppressed(T root, T err)`	Utility method to add the given throwable error to the given throwable root error.
`static long`	`adjustedWalHistorySize(DataStorageConfiguration dsCfg, @Nullable IgniteLogger log)`	Calculates maximum WAL archive size based on maximum checkpoint buffer size, if the default value of `DataStorageConfiguration.getMaxWalArchiveSize()` is not overridden.
`static Collection<Class<?>>`	`allInterfaces(Class<?> cls)`	Provides all interfaces of `cls` including inherited ones.
`static Collection<String>`	`allLocalIps()`	Gets a list of all local non-loopback IPs known to this JVM.
`static Collection<String>`	`allLocalMACs()`	Gets a list of all local enabled MACs known to this JVM.
`static List<PluginProvider>`	`allPluginProviders()`	Gets all plugin providers.
`static List<PluginProvider>`	`allPluginProviders(IgniteConfiguration cfg, boolean includeClsPath)`	Gets all plugin providers.
`static boolean`	`alphanumericUnderscore(String s)`
`static int`	`arrayCopy(byte[] src, int off, byte[] resBuf, int resOff, int len)`
`static <T extends R,R> List<R>`	`arrayList(Collection<T> c)`
`static <T extends R,R> List<R>`	`arrayList(Collection<T> c, @Nullable IgnitePredicate<? super T>... p)`
`static <T extends R,R> List<R>`	`arrayList(Iterator<T> c, int cap, @Nullable IgnitePredicate<? super T>... p)`
`static <T> Iterable<T>`	`asIterable(Enumeration<T> e)`	Converts enumeration to iterable so it can be used in `foreach` construct.
`static boolean`	`assertionsEnabled()`
`static void`	`assertParameter(boolean cond, String condDesc)`	Throws exception with uniform error message if given parameter's assertion condition is `false`.
`static void`	`asyncLogError(IgniteInternalFuture<?> f, IgniteLogger log)`	Adds listener to asynchronously log errors.
`static int`	`availableThreadCount(GridKernalContext ctx, byte plc, int reserved)`
`static void`	`await(CountDownLatch latch)`	Awaits for the latch.
`static boolean`	`await(CountDownLatch latch, long timeout, TimeUnit unit)`	Awaits for the latch.
`static void`	`await(Condition cond)`	Awaits for condition.
`static boolean`	`await(Condition cond, long time, TimeUnit unit)`	Awaits for condition.
`static void`	`awaitForWorkersStop(Collection<GridWorker> workers, boolean cancel, @Nullable IgniteLogger log)`	Stops workers from given collection and waits for their completion.
`static void`	`awaitQuiet(CountDownLatch latch)`	Awaits for the latch until it is counted down, ignoring interruptions.
`static void`	`awaitQuiet(CyclicBarrier barrier)`	Awaits for the barrier ignoring interruptions.
`static void`	`awaitQuiet(Condition cond)`	Awaits for condition ignoring interrupts.
`static @Nullable Class<?>`	`box(@Nullable Class<?> cls)`	Gets wrapper class for a primitive type.
`static IgniteFuture<Void>`	`broadcastToNodesWithFilterAsync(GridKernalContext kctx, IgniteRunnable job, boolean srvrsOnly, IgnitePredicate<ClusterNode> nodeFilter)`	Broadcasts given job to nodes that match filter.
`static String`	`byteArray2HexString(byte[] arr)`	Converts byte array to hex string.
`static String`	`byteArray2HexString(byte[] arr, boolean toUpper)`	Converts byte array to hex string.
`static String`	`byteArray2String(byte[] arr, String hdrFmt, String bodyFmt)`	Converts byte array to formatted string.
`static boolean`	`bytesEqual(byte[] a, int aOff, byte[] b, int bOff, int len)`	Compares fragments of byte arrays.
`static double`	`bytesToDouble(byte[] bytes, int off)`	Constructs double from byte array.
`static float`	`bytesToFloat(byte[] bytes, int off)`	Constructs float from byte array.
`static IgniteUuid`	`bytesToIgniteUuid(byte[] in, int off)`	Converts bytes to `IgniteUuid`.
`static int`	`bytesToInt(byte[] bytes, int off)`	Constructs `int` from byte array.
`static long`	`bytesToLong(byte[] bytes, int off)`	Constructs `long` from byte array.
`static short`	`bytesToShort(byte[] bytes, int off)`	Constructs `short` from byte array.
`static UUID`	`bytesToUuid(byte[] bytes, int off)`	Reads an `UUID` form byte array.
`static GridCacheAttributes[]`	`cacheAttributes(ClusterNode n)`	Gets cache attributes for the node.
`static String`	`calculateMD5(InputStream in)`	Calculate MD5 string.
`static byte[]`	`calculateMD5Digest(@NotNull InputStream in)`	Calculate MD5 digits.
`static int[]`	`calculateOptimalBatchSizes(int parallelismLvl, int size)`	Split number of tasks into optimized batches.
`static void`	`cancel(@Nullable GridWorker w)`	Cancels given runnable.
`static void`	`cancel(Iterable<? extends GridWorker> ws)`	Cancels collection of runnables.
`static int`	`capacity(int expSize)`	Returns a capacity that is sufficient to keep the map from being resized as long as it grows no larger than expSize and the load factor is >= its default (0.75).
`static IgniteCheckedException`	`cast(Throwable t)`	Casts the passed `Throwable t` to `IgniteCheckedException`. If `t` is a `GridClosureException`, it is unwrapped and then cast to `IgniteCheckedException`.
`static int`	`ceilPow2(int v)`	Gets nearest power of 2 larger or equal than v.
`static long`	`checkpointBufferSize(DataRegionConfiguration regCfg)`	Get checkpoint buffer size for the given configuration.
`static boolean`	`classCannotBeLoadedByName(Class<?> objectClass)`	Returns `true` if class can not be loaded by name.
`static @Nullable Class<?>`	`classForName(@Nullable String cls, @Nullable Class<?> dflt)`	Gets class for the given name if it can be loaded or default given class.
`static @Nullable Class<?>`	`classForName(@Nullable String cls, @Nullable Class<?> dflt, boolean includePrimitiveTypes)`	Gets class for the given name if it can be loaded or default given class.
`static URL[]`	`classLoaderUrls(ClassLoader clsLdr)`	Returns URLs of class loader
`static String`	`classNameToResourceName(String clsName)`	Gets resource path for the class.
`static void`	`clearClassCache()`	Completely clears class cache.
`static void`	`clearClassCache(ClassLoader ldr)`	Clears class cache for provided loader.
`static void`	`clearClassFromClassCache(ClassLoader ldr, String clsName)`	Clears class associated with provided class loader from class cache.
`static void`	`close(@Nullable AutoCloseable rsrc, @Nullable IgniteLogger log)`	Closes given resource logging possible checked exception.
`static void`	`close(@Nullable DatagramSocket rsrc)`	Closes given resource.
`static void`	`close(@Nullable Socket sock, @Nullable IgniteLogger log)`	Closes given socket logging possible checked exception.
`static void`	`close(@Nullable URLClassLoader clsLdr, @Nullable IgniteLogger log)`	Closes class loader logging possible checked exception.
`static void`	`close(@Nullable SelectionKey rsrc, @Nullable IgniteLogger log)`	Closes given resource logging possible checked exceptions.
`static void`	`close(@Nullable Selector rsrc, @Nullable IgniteLogger log)`	Closes given resource logging possible checked exception.
`static void`	`close(@Nullable Context rsrc, @Nullable IgniteLogger log)`	Closes given resource logging possible checked exception.
`static void`	`closeQuiet(@Nullable AutoCloseable rsrc)`	Quietly closes given resource ignoring possible checked exception.
`static void`	`closeQuiet(@Nullable Socket sock)`	Quietly closes given `Socket` ignoring possible checked exception.
`static void`	`closeQuiet(@Nullable SelectionKey rsrc)`	Quietly closes given resource ignoring possible checked exceptions.
`static void`	`closeQuiet(@Nullable Selector rsrc)`	Quietly closes given resource ignoring possible checked exception.
`static void`	`closeQuiet(@Nullable Context rsrc)`	Quietly closes given resource ignoring possible checked exception.
`static void`	`closeWithSuppressingException(@Nullable AutoCloseable rsrc, @NotNull Exception e)`	Closes given resource suppressing possible checked exception.
`static String`	`compact(String s)`	Replaces all occurrences of `org.apache.ignite.` with `o.a.i.`, `org.apache.ignite.internal.` with `o.a.i.i.`, `org.apache.ignite.internal.visor.` with `o.a.i.i.v.` and
`static int`	`compareVersionNumbers(@Nullable String v1, @Nullable String v2)`	Compare java implementation version
`static int`	`concurrentMapSegment(int hash, int concurLvl)`
`static String`	`consistentId(Collection<String> addrs)`
`static String`	`consistentId(Collection<String> addrs, int port)`
`static boolean`	`containsAll(Map<?,?> base, Map<?,?> map)`	Checks if the map passed in is contained in base map.
`static boolean`	`containsIntArray(int[] arr, int val)`	Checks for containment of the value in the array.
`static boolean`	`containsObjectArray(@Nullable Object[] arr, Object val, @Nullable Object... vals)`	Checks for containment of the value in the array.
`static boolean`	`containsStringArray(String[] arr, @Nullable String val, boolean ignoreCase)`	Checks for containment of given string value in the specified array.
`static boolean`	`containsStringCollection(Iterable<String> c, @Nullable String val, boolean ignoreCase)`	Checks for containment of given string value in the specified collection.
`static IgniteUuid`	`contextDeploymentClassLoaderId(GridKernalContext ctx)`	Returns Deployment class loader id if method was invoked in the job context (it may be the context of a cache's operation which was triggered by the distributed job) or `null` if no context was found or Deployment is switched off.
`static IgniteException`	`convertException(IgniteCheckedException e)`
`static Exception`	`convertExceptionNoWrap(IgniteCheckedException e)`	Converts exception, but unlike `convertException(IgniteCheckedException)` does not wrap passed in exception if none suitable converter found.
`static <T> Collection<T>`	`convertToSingletonList(Collection<T> col)`
`static void`	`copy(File src, File dest, boolean overwrite)`	Copy source file (or folder) to destination file (or folder).
`static int`	`copy(InputStream in, OutputStream out)`	Copies input byte stream to output byte stream.
`static int`	`copy(Reader in, Writer out)`	Copies input character stream to output character stream.
`static int[]`	`copyIfExceeded(int[] arr, int len)`	Copies array only if array length greater than needed length.
`static <K,V> Map<K,V>`	`copyMap(Map<K,V> m)`
`static byte[]`	`copyMemory(long ptr, int size)`
`static void`	`courtesy(@Nullable IgniteLogger log, Object msg)`	Depending on whether or not log is provided and quiet mode is enabled logs given messages as quiet message or normal log WARN message in `org.apache.ignite.CourtesyConfigNotice` category.
`static void`	`courtesy(@Nullable IgniteLogger log, Object longMsg, Object shortMsg)`	Depending on whether or not log is provided and quiet mode is enabled logs given messages as quiet message or normal log WARN message in `org.apache.ignite.CourtesyConfigNotice` category.
`static Cipher`	`createCipher(Key key, int encMode)`
`static @Nullable Method`	`ctorFactory()`	Return SUN specific constructor factory.
`static long`	`currentTimeMillis()`
`static String`	`customDirectoryLogFileName(@Nullable String dir, String fileName)`	Substitutes log directory with a custom one.
`static String`	`dash(int len)`	Makes a `'+---+'` dash line.
`static boolean`	`deadlockPresent()`
`static void`	`debug(Object msg)`	Deprecated. Calls to this method should never be committed to master.
`static void`	`debug(IgniteLogger log, String msg)`	Deprecated. Calls to this method should never be committed to master.
`static void`	`debugHeapUsage()`	Prints heap usage.
`static void`	`debugStack(IgniteLogger log, String msg)`	Deprecated. Calls to this method should never be committed to master.
`static void`	`debugx(String msg)`	Deprecated. Calls to this method should never be committed to master.
`static byte[]`	`decodeHex(char[] data)`	Converts an array of characters representing hexidecimal values into an array of bytes of those same values.
`static String`	`defaultWorkDirectory()`	Get default work directory.
`static boolean`	`delete(@Nullable File file)`	Deletes file or directory with all sub-directories and files.
`static boolean`	`delete(Path path)`	Deletes file or directory with all sub-directories and files.
`static ClassLoader`	`deploymentClassLoader(GridKernalContext ctx, IgniteUuid ldrId)`	Gets that deployment class loader matching by the specific id, or `null` if the class loader was not found.
`static Class<?>`	`detectClass(Object obj)`	Tries to detect user class from passed in object inspecting collections, arrays or maps.
`static ClassLoader`	`detectClassLoader(Class<?> cls)`	Detects class loader for given class.
`static @Nullable ClassLoader`	`detectObjectClassLoader(@Nullable Object obj)`	Detects class loader for given object's class.
`static GridPeerDeployAware`	`detectPeerDeployAware(GridPeerDeployAware obj)`	Unwraps top level user class for wrapped objects.
`static int[]`	`difference(int[] a, int aLen, int[] b, int bLen)`	Returns array which is the difference between two arrays (array of elements contained in first array but not contained in second).
`static long`	`dirSize(Path path)`	Will calculate the size of a directory.
`static boolean`	`discoOrdered(DiscoverySpi discoSpi)`
`static <T,R> Collection<R>`	`doInParallel(int parallelismLvl, ExecutorService executorSvc, Collection<T> srcDatas, IgniteThrowableFunction<T,R> operation)`	Execute operation on data in parallel.
`static <T,R> Collection<R>`	`doInParallel(ExecutorService executorSvc, Collection<T> srcDatas, IgniteThrowableFunction<T,R> operation)`	Execute operation on data in parallel.
`static <T,R> Collection<R>`	`doInParallelUninterruptibly(int parallelismLvl, ExecutorService executorSvc, Collection<T> srcDatas, IgniteThrowableFunction<T,R> operation)`	Execute operation on data in parallel uninterruptibly.
`static byte[]`	`doubleToBytes(double d)`	Converts primitive double to byte array.
`static int`	`doubleToBytes(double d, byte[] bytes, int off)`	Converts primitive `double` type to byte array and stores it in the specified byte array.
`static File`	`downloadUrl(URL url, File file)`	Downloads resource by URL.
`static void`	`dumpStack()`	Deprecated. Calls to this method should never be committed to master.
`static void`	`dumpStack(@Nullable IgniteLogger log, String msg)`
`static void`	`dumpStack(String msg)`	Deprecated. Calls to this method should never be committed to master.
`static void`	`dumpStack(String msg, PrintStream out)`	Deprecated. Calls to this method should never be committed to master.
`static void`	`dumpStack(Thread t)`	Deprecated. Calls to this method should never be committed to master.
`static void`	`dumpStack(Thread t, PrintStream s)`	Deprecated. Calls to this method should never be committed to master.
`static void`	`dumpThreads(@Nullable IgniteLogger log)`	Performs thread dump and prints all available info to the given log with WARN logging level.
`static void`	`dumpThreads(@Nullable IgniteLogger log, boolean isErrorLevel)`	Performs thread dump and prints all available info to the given log with WARN or ERROR logging level depending on `isErrorLevel` parameter.
`static ClusterGroupEmptyCheckedException`	`emptyTopologyException()`	Creates appropriate empty projection exception.
`static void`	`enhanceThreadName(@Nullable Thread thread, String text)`	Puts additional text to thread name.
`static void`	`enhanceThreadName(String text)`	Puts additional text to thread name.
`static void`	`ensureDirectory(File dir, String msg, IgniteLogger log)`	Checks if the given directory exists and attempts to create one if not.
`static void`	`ensureDirectory(Path dir, String msg, IgniteLogger log)`	Checks if the given directory exists and attempts to create one if not.
`static long`	`ensurePositive(long i, long dflt)`	When `long` value given is positive returns that value, otherwise returns provided default value.
`static void`	`error(@Nullable IgniteLogger log, Object msg)`	Depending on whether or not log is provided and quiet mode is enabled logs given messages as quiet message or normal log ERROR message.
`static void`	`error(@Nullable IgniteLogger log, Object shortMsg, @Nullable Throwable e)`	Shortcut for `error(org.apache.ignite.IgniteLogger, Object, Object, Throwable)`.
`static void`	`error(@Nullable IgniteLogger log, Object longMsg, Object shortMsg, @Nullable Throwable e)`	Depending on whether or not log is provided and quiet mode is enabled logs given messages as quiet message or normal log ERROR message.
`static IgniteCheckedException`	`exceptionWithSuppressed(String msg, @Nullable Collection<Throwable> suppressed)`	Creates `IgniteCheckedException` with the collection of suppressed exceptions.
`static String`	`extendToLen(String s, int targetLen)`	Appends spaces to end of input string for extending to needed length.
`static <T> T`	`field(Class<?> cls, String fieldName)`	Gets field value.
`static <T> T`	`field(Object obj, String fieldName)`	Gets field value.
`static long`	`fieldOffset(Class<?> cls, String fieldName)`	Gets object field offset.
`static int`	`fileCount(Path dir)`	Return count of regular file in the directory (including in sub-directories)
`static String`	`filler(int len, char ch)`
`static List<InetAddress>`	`filterReachable(Collection<InetAddress> addrs)`
`static @Nullable Field`	`findField(Class<?> cls, String name)`
`static @Nullable Method`	`findInheritableMethod(Class<?> cls, String name, Class<?>... paramTypes)`	Finds a non-static and non-abstract method from the class it parents.
`static @Nullable Method`	`findNonPublicMethod(Class<?> cls, String name, Class<?>... paramTypes)`	Finds a method in the class and it parents.
`static <T> T`	`firstNotNull(@Nullable T... vals)`	Returns a first non-null value in a given array, if such is present.
`static long`	`fixedLengthFileNumber(String fileName)`
`static String`	`fixedLengthNumberName(long num, @Nullable String ext)`	Generates file name from index.
`static Pattern`	`fixedLengthNumberNamePattern(@Nullable String ext)`
`static String`	`fl(String msg, Object... args)`	Creates string for log output.
`static byte[]`	`floatToBytes(float f)`	Converts primitive float to byte array.
`static int`	`floatToBytes(float f, byte[] bytes, int off)`	Converts primitive float to byte array.
`static @Nullable Constructor<?>`	`forceEmptyConstructor(Class<?> cls)`	Gets empty constructor for class even if the class does not have empty constructor declared.
`static <T> T`	`forceNewInstance(Class<?> cls)`	Creates new instance of a class even if it does not have public constructor.
`static String`	`format(long sysTime)`	Formats system time in milliseconds for printing in logs.
`static String`	`formatMins(long mins)`	Pretty-formatting for minutes.
`static Class<?>`	`forName(String clsName, @Nullable ClassLoader ldr)`	Gets class for provided name.
`static Class<?>`	`forName(String clsName, @Nullable ClassLoader ldr, IgnitePredicate<String> clsFilter)`	Gets class for provided name.
`static Class<?>`	`forName(String clsName, @Nullable ClassLoader ldr, IgnitePredicate<String> clsFilter, boolean useCache)`	Gets class for provided name.
`static GridIntIterator`	`forRange(int start, int cnt)`	Returns `GridIntIterator` for range of primitive integers.
`static <T> T`	`fromBytes(byte[] data)`	Deserialize object from byte array.
`static <T> T`	`get(Future<T> fut)`	Gets result from the given future with right exception handling.
`static <T extends Annotation> T`	`getAnnotation(Class<?> cls, Class<T> annCls)`	Gets annotation for a class.
`static BaselineTopology`	`getBaselineTopology(@NotNull GridKernalContext ctx)`
`static BaselineTopology`	`getBaselineTopology(@NotNull GridCacheContext cctx)`
`static BaselineTopology`	`getBaselineTopology(@NotNull GridCacheSharedContext cctx)`
`static <T> T`	`getByIndex(Collection<T> vals, int idx)`	Gets collection value by index.
`static CompilationMXBean`	`getCompilerMx()`	Gets compilation MBean.
`static @Nullable String`	`getCurrentIgniteName()`	Get current Ignite name.
`static <T extends Annotation> T`	`getDeclaredAnnotation(Class<?> cls, Class<T> annCls)`	Gets declared annotation for a class.
`static C1<IgniteCheckedException,IgniteException>`	`getExceptionConverter(Class<? extends IgniteCheckedException> clazz)`	Gets IgniteClosure for an IgniteCheckedException class.
`static @Nullable String`	`getIgniteHome()`	Retrieves `IGNITE_HOME` property.
`static InetAddress`	`getLocalHost()`	Gets local host.
`static MemoryMXBean`	`getMemoryMx()`	Gets memory MBean.
`static @Nullable String`	`getNetworkInterfaceName(String addr)`	Gets display name of the network interface this IP address belongs to.
`static @Nullable Method`	`getNonPublicMethod(Class<?> cls, String name, Class<?>... paramTypes)`	Gets a method from the class.
`static OperatingSystemMXBean`	`getOsMx()`	Gets OS MBean.
`static String`	`getResourceName(Class rscCls)`	Gets resource name.
`static RuntimeMXBean`	`getRuntimeMx()`	Gets runtime MBean.
`static String`	`getSimpleName(Class<?> cls)`	Gets simple class name taking care of empty names.
`static String`	`getTaskName(Class<? extends ComputeTask<?,?>> taskCls)`	Gets task name for the given task class.
`static ThreadMXBean`	`getThreadMx()`	Gets threading MBean.
`static long`	`getTotalMemoryAvailable()`	Gets amount of RAM memory available on this machine.
`static ClassLoader`	`gridClassLoader()`
`static String`	`gridEventName(int type)`	Gets name for given grid event type.
`static int[]`	`gridEvents(int... excl)`	Gets all event types.
`static Collection<UUID>`	`gridIds(@Nullable Collection<? extends Ignite> grids)`	Converts collection of Grid instances to collection of node IDs.
`static Collection<String>`	`grids2names(@Nullable Collection<? extends Ignite> grids)`	Converts collection of Grid instances to collection of grid names.
`static <T extends Annotation> boolean`	`hasAnnotation(Class<?> cls, Class<T> annCls)`	Indicates if class has given annotation.
`static <T extends Annotation> boolean`	`hasAnnotation(Object o, Class<T> annCls)`	Indicates if class has given annotation.
`static <T extends Annotation> boolean`	`hasDeclaredAnnotation(Class<?> cls, Class<T> annCls)`	Indicates if class has given declared annotation.
`static <T extends Annotation> boolean`	`hasDeclaredAnnotation(Object o, Class<T> annCls)`	Indicates if class has given annotation.
`static boolean`	`hasField(Object obj, String fieldName)`	Check that field exist.
`static int`	`hash(int h)`	Applies a supplemental hash function to a given hashCode, which defends against poor quality hash functions.
`static int`	`hash(long key)`	A primitive override of `hash(Object)` to avoid unnecessary boxing.
`static int`	`hash(Object key)`	Applies a supplemental hash function to a given hashCode, which defends against poor quality hash functions.
`static int`	`hashCode(Object obj)`	Calculate a hashCode for an array.
`static int`	`hashCode(ByteBuffer... bufs)`	Calculates hash code for the given byte buffers contents.
`static int`	`hashToIndex(int hash, int size)`	Maps object hash to some index between 0 and specified size via modulo operation.
`static boolean`	`hasNearCache(ClusterNode n, String cacheName)`	Checks if given node has near cache enabled for the specified partitioned cache.
`static boolean`	`hasParent(@Nullable ClassLoader parent, ClassLoader ldr)`
`static double`	`heapSize(int precision)`	Returns current JVM maxMemory in the same format as `heapSize(ClusterNode, int)`.
`static double`	`heapSize(Iterable<ClusterNode> nodes, int precision)`	Gets total heap size in GB rounded to specified precision.
`static double`	`heapSize(ClusterNode node, int precision)`	Gets heap size in GB rounded to specified precision.
`static String`	`hexInt(int val)`	Gets a hex string representation of the given long value.
`static String`	`hexLong(long val)`	Gets a hex string representation of the given long value.
`static byte[]`	`hexString2ByteArray(String hex)`	Convert string with hex values to byte array.
`static @Nullable String`	`hidePassword(@Nullable String uri)`	Replace password in URI string with a single '*' character.
`static String`	`humanReadableByteCount(long bytes)`	Converts count of bytes to a human-readable format.
`static String`	`humanReadableDuration(long millis)`	Converts duration to a human-readable format.
`static IgniteClosure<UUID,ClusterNode>`	`id2Node(GridKernalContext ctx)`
`static String`	`id8(UUID id)`	Gets 8-character substring of UUID (for terse logging).
`static String`	`id8(IgniteUuid id)`	Gets 8-character substring of `IgniteUuid` (for terse logging).
`static byte[]`	`igniteUuidToBytes(IgniteUuid uuid)`	Converts `IgniteUuid` to bytes.
`static void`	`igniteUuidToBytes(IgniteUuid uuid, byte[] out, int off)`	Converts `IgniteUuid` to bytes.
`static boolean`	`inClassPath(String clsName)`	Check whether class is in classpath.
`static Comparator<InetSocketAddress>`	`inetAddressesComparator(boolean sameHost)`	Returns comparator that sorts remote node addresses.
`static IgniteLogger`	`initLogger(@Nullable IgniteLogger cfgLog, @Nullable String app, @Nullable UUID nodeId, String workDir)`
`static IgniteLogger`	`initLogger(IgniteConfiguration cfg, String app)`
`static void`	`initWorkDir(IgniteConfiguration cfg)`	Resolves work directory.
`static void`	`interrupt(@Nullable Thread t)`	Convenience method that interrupts a given thread if it's not `null`.
`static void`	`interrupt(Iterable<? extends Thread> workers)`	Convenience method that interrupts a given thread if it's not `null`.
`static byte[]`	`intToBytes(int i)`	Converts primitive `int` type to byte array.
`static int`	`intToBytes(int i, byte[] bytes, int off)`	Converts primitive `int` type to byte array and stores it in specified byte array.
`static <T> T`	`invoke(@Nullable Class<?> cls, @Nullable Object obj, String mtdName, Class[] paramTypes, Object... params)`	Invokes method.
`static <T> T`	`invoke(@Nullable Class<?> cls, @Nullable Object obj, String mtdName, Object... params)`	Invokes method.
`static boolean`	`isCurrentIgniteNameSet(@Nullable String name)`	Check if current Ignite name is set.
`static boolean`	`isEnum(Class cls)`	Check if given class represents a Enum.
`static boolean`	`isEqualsMethod(Method mtd)`
`static boolean`	`isFinal(Class<?> cls)`
`static boolean`	`isFlagSet(int flags, int flag)`	Check if flag set.
`static boolean`	`isGrid(Class<?> cls)`	Checks if given class is of `Grid` type.
`static boolean`	`isHashCodeMethod(Method mtd)`
`static boolean`	`isHotSpot()`	Indicates whether HotSpot VM is used.
`static boolean`	`isIgnite(Class<?> cls)`	Checks if given class is of `Ignite` type.
`static boolean`	`isIncreasingArray(int[] arr, int len)`	Checks if array prefix increases.
`static boolean`	`isJavaVersionAtLeast(String v)`	Compare running Java Runtime version with `v`
`static boolean`	`isJdk(Class<?> cls)`	Check if given class is of JDK type.
`static boolean`	`isJmxRemoteEnabled()`
`static boolean`	`isLambda(Class<?> objectClass)`	Returns `true` if class is a lambda.
`static boolean`	`isLinux()`	Indicates whether current OS is Linux flavor.
`static boolean`	`isLoadableBy(String clsName, @Nullable ClassLoader ldr)`	Tests whether or not given class is loadable provided class loader.
`static boolean`	`isLocalAddress(InetAddress addr)`	Checks if the address is local.
`static boolean`	`isLocalHostChanged()`	Determines whether current local host is different from previously cached.
`static boolean`	`isLocalNodeCoordinator(GridDiscoveryManager discoMgr)`
`static boolean`	`isMacInvalidArgumentError(Exception e)`	Checks if error is MAC invalid argument error which ususally requires special handling.
`static boolean`	`isMacOs()`	Indicates whether current OS is Mac OS.
`static boolean`	`isNetWare()`	Indicates whether current OS is Netware.
`static boolean`	`isNonDecreasingArray(int[] arr, int len)`	Checks if array prefix do not decreases.
`static boolean`	`isOldestNodeVersionAtLeast(IgniteProductVersion ver, Iterable<ClusterNode> nodes)`	Check that node Ignite product version is not less then specified.
`static boolean`	`isPow2(int i)`
`static boolean`	`isPrimitiveArray(Object obj)`	Checks if object is a primitive array.
`static boolean`	`isPrimitiveOrWrapper(Class<?> cls)`
`static boolean`	`isRedHat()`
`static boolean`	`isRestartEnabled()`
`static boolean`	`isRestEnabled(IgniteConfiguration cfg)`
`static boolean`	`isSolaris()`	Indicates whether current OS is Solaris.
`static boolean`	`isSolarisSparc()`	Indicates whether current OS is Solaris on Spark box.
`static boolean`	`isSolarisX86()`	Indicates whether current OS is Solaris on x86 box.
`static boolean`	`isToStringMethod(Method mtd)`
`static boolean`	`isTxAwareQueriesEnabled(GridKernalContext kctx)`
`static boolean`	`isUnix()`	Indicates whether current OS is UNIX flavor.
`static boolean`	`isVisorNodeStartProperty(String name)`	Checks whether property is one added by Visor when node is started via remote SSH session.
`static boolean`	`isVisorRequiredProperty(String name)`	Checks whether property is one required by Visor to work correctly.
`static boolean`	`isWindows()`	Indicates whether current OS is Windows.
`static boolean`	`isWindows2003()`	Indicates whether current OS is Windows Server 2003.
`static boolean`	`isWindows2008()`	Indicates whether current OS is Windows Server 2008.
`static boolean`	`isWindows2k()`	Indicates whether current OS is Windows 2000.
`static boolean`	`isWindows7()`	Indicates whether current OS is Windows 7.
`static boolean`	`isWindows8()`	Indicates whether current OS is Windows 8.
`static boolean`	`isWindows81()`	Indicates whether current OS is Windows 8.1.
`static boolean`	`isWindows95()`	Indicates whether current OS is Windows 95.
`static boolean`	`isWindows98()`	Indicates whether current OS is Windows 98.
`static boolean`	`isWindowsNt()`	Indicates whether current OS is Windows NT.
`static boolean`	`isWindowsVista()`	Indicates whether current OS is Windows Vista.
`static boolean`	`isWindowsXp()`	Indicates whether current OS is Windows XP.
`static String`	`jdkName()`	Gets JDK name.
`static String`	`jdkString()`	Gets JDK string.
`static String`	`jdkVendor()`	Gets JDK vendor.
`static String`	`jdkVersion()`	Gets JDK version.
`static JMException`	`jmException(Throwable e)`	Utility method creating `JMException` with given cause.
`static byte[]`	`join(byte[]... bufs)`	Join byte arrays into single one.
`static void`	`join(@Nullable Thread t)`	Joins thread.
`static boolean`	`join(@Nullable Thread t, @Nullable IgniteLogger log)`	Waits for completion of a given thread.
`static boolean`	`join(@Nullable Thread t, @Nullable IgniteLogger log, long timeout)`	Waits for completion of a given thread.
`static boolean`	`join(@Nullable GridWorker w, @Nullable IgniteLogger log)`	Joins runnable.
`static boolean`	`join(Iterable<? extends GridWorker> ws, IgniteLogger log)`	Joins given collection of runnables.
`static void`	`join(GridWorker w)`	Joins worker.
`static boolean`	`joinThreads(Iterable<? extends Thread> workers, @Nullable IgniteLogger log)`	Waits for completion of a given threads.
`static String`	`jreName()`	Gets Java Runtime name.
`static String`	`jreVersion()`	Gets Java Runtime version.
`static boolean`	`jvm32Bit()`	Does a best effort to detect if we a running on a 32-bit JVM.
`static List<String>`	`jvmArgs()`
`static String`	`jvmName()`	Gets JVM implementation name.
`static int`	`jvmPid()`
`static String`	`jvmSpec()`	Gets JVM specification name.
`static String`	`jvmVendor()`	Gets JVM implementation vendor.
`static String`	`jvmVersion()`	Gets JVM implementation version.
`static @Nullable String`	`lambdaEnclosingClassName(String clsName)`	Extracts full name of enclosing class from JDK8 lambda class name.
`static String`	`language(ClassLoader ldr)`
`static <K,V> Map<K,V>`	`limitedMap(int limit)`	Creates new map that limited by size.
`static <S> Iterable<S>`	`loadService(Class<S> svcCls)`
`static void`	`log(@Nullable IgniteLogger log, Object msg)`	Depending on whether or not log is provided and quiet mode is enabled logs given messages as quiet message or normal log INF0 message.
`static void`	`log(@Nullable IgniteLogger log, Object longMsg, Object shortMsg)`	Depending on whether or not log is provided and quiet mode is enabled logs given messages as quiet message or normal log INFO message.
`static IgniteLogger`	`logger(GridKernalContext ctx, AtomicReference<IgniteLogger> logRef, Class<?> cls)`	Initializes logger into/from log reference passed in.
`static IgniteLogger`	`logger(GridKernalContext ctx, AtomicReference<IgniteLogger> logRef, Object obj)`	Initializes logger into/from log reference passed in.
`static byte[]`	`longToBytes(long l)`	Converts primitive `long` type to byte array.
`static int`	`longToBytes(long l, byte[] bytes, int off)`	Converts primitive `long` type to byte array and stores it in specified byte array.
`static int`	`majorJavaVersion(String verStr)`	Get major Java version from string.
`static ObjectName`	`makeMBeanName(@Nullable String igniteInstanceName, @Nullable String grp, String name)`	Constructs JMX object name with given properties.
`static ObjectName`	`makeMBeanName(@Nullable String igniteInstanceName, @Nullable String grp, List<String> grps, String name)`	Constructs JMX object name with given properties.
`static <K,V> Map<K,V>`	`map(K k, V v)`	Create a map with single key-value pair.
`static <K,V> Map<K,V>`	`map(K k1, V v1, K k2, V v2)`	Create a map with two key-value pairs.
`static <K,V> Map<K,V>`	`map(K k1, V v1, K k2, V v2, K k3, V v3)`	Create a map with three key-value pairs.
`static byte[]`	`marshal(GridKernalContext ctx, Object obj)`	Marshals object to byte array.
`static byte[]`	`marshal(GridCacheSharedContext ctx, Object obj)`	Marshals object to byte array.
`static void`	`marshal(Marshaller marsh, @Nullable Object obj, OutputStream out)`	Marshals object to byte array.
`static byte[]`	`marshal(Marshaller marsh, Object obj)`	Marshals object to byte array.
`static String`	`maskForFileName(CharSequence name)`	Masks name for a valid directory path.
`static String`	`maskName(@Nullable String name)`	Mask component name to make sure that it is not `null`.
`static <T extends Comparable<? super T>> T`	`max(T t0, T t1)`
`static long`	`millisSinceNanos(long nanos)`	Returns number of milliseconds passed after the given nanos timestamp.
`static long`	`millisToNanos(long millis)`	Convert milliseconds time interval to nanoseconds.
`static boolean`	`mkdirs(File dir)`
`static long`	`nanosToMillis(long nanos)`	Convert nanoseconds time interval to milliseconds.
`static int`	`nearestPow2(int x)`
`static int`	`nearestPow2(int x, boolean less)`
`static Map<String,Collection<ClusterNode>>`	`neighborhood(Iterable<ClusterNode> nodes)`	Groups given nodes by the node's physical computer (host).
`static <K,V> HashMap<K,V>`	`newHashMap(int expSize)`	Creates new `HashMap` with expected size.
`static <T> HashSet<T>`	`newHashSet(int expSize)`	Creates new `HashSet` with expected size.
`static <X> Set<X>`	`newIdentityHashSet()`
`static <T> T`	`newInstance(Class<T> cls)`	Creates new instance of a class only if it has an empty constructor (can be non-public).
`static <T> T`	`newInstance(String cls)`	Creates new instance of a class only if it has an empty constructor (can be non-public).
`static <K,V> LinkedHashMap<K,V>`	`newLinkedHashMap(int expSize)`	Creates new `LinkedHashMap` with expected size.
`static <T> LinkedHashSet<T>`	`newLinkedHashSet(int expSize)`	Creates new `LinkedHashSet` with expected size.
`static int`	`nextPowerOf2(int v)`	Round up the argument to the next highest power of 2;
`static String`	`nl()`
`static String`	`nodeIdLogFileName(UUID nodeId, String fileName)`	Attaches node ID to log file name.
`static Collection<UUID>`	`nodeIds(@Nullable Collection<? extends ClusterNode> nodes)`	Converts collection of nodes to collection of node IDs.
`static Collection<String>`	`nodes2names(@Nullable Collection<? extends ClusterNode> nodes)`	Converts collection of grid nodes to collection of grid names.
`static <T> void`	`notifyListeners(T t, Collection<Consumer<T>> lsnrs, IgniteLogger log)`	Notifies provided `lsnrs` with the value `t`.
`static void`	`nullifyHomeDirectory()`	Nullifies Ignite home directory.
`static Constructor`	`objectConstructor()`
`static double`	`offheapSize(Iterable<ClusterNode> nodes, int precision)`	Gets total offheap size in GB rounded to specified precision.
`static ClusterNode`	`oldest(Collection<ClusterNode> c, @Nullable IgnitePredicate<ClusterNode> p)`	Gets oldest node out of collection of nodes.
`static void`	`onGridStart()`	Starts clock timer if grid is first.
`static void`	`onGridStop()`	Stops clock timer if all nodes into JVM were stopped.
`static String`	`osArchitecture()`	Gets OS CPU-architecture.
`static String`	`osJdkString()`	Gets OS JDK string.
`static String`	`osName()`	Gets underlying OS name.
`static String`	`osString()`	Gets OS string.
`static String`	`osVersion()`	Gets underlying OS version.
`static boolean`	`overridesEqualsAndHashCode(Class<?> cls)`
`static boolean`	`overridesEqualsAndHashCode(Object obj)`
`static boolean`	`p2pLoader(ClassLoader ldr)`	Checks if class loader is an internal P2P class loader.
`static boolean`	`p2pLoader(Object o)`	Checks if class loader is an internal P2P class loader.
`static String`	`packageName(Class<?> cls)`
`static String`	`pad(int len)`	Creates space filled string of given length.
`static GridPeerDeployAware`	`peerDeployAware(Object obj)`	Creates an instance of `GridPeerDeployAware` for object.
`static GridPeerDeployAware`	`peerDeployAware0(@Nullable Iterable<?> c)`	Gets the peer deploy aware instance for the object with the widest class loader.
`static GridPeerDeployAware`	`peerDeployAware0(@Nullable Object... c)`	Gets the peer deploy aware instance for the object with the widest class loader.
`static GridPeerDeployAware`	`peerDeployAware0(Object obj)`	Creates an instance of `GridPeerDeployAware` for object.
`static <K,V> void`	`printConcurrentHashMapInfo(ConcurrentHashMap<K,V> map)`
`static void`	`printStackTrace(long threadId, GridStringBuilder sb)`
`static IgniteProductVersion`	`productVersion(ClusterNode node)`	Gets node product version based on node attributes.
`static <T> T`	`property(Object obj, String propName)`	Gets property value.
`static void`	`quiet(boolean err, Object... objs)`
`static void`	`quietAndInfo(IgniteLogger log, String msg)`	Prints out the message in quiet and info modes.
`static void`	`quietAndWarn(IgniteLogger log, Object msg)`	Logs warning message in both verbose and quiet modes.
`static void`	`quietAndWarn(IgniteLogger log, Object msg, @Nullable Throwable e)`	Logs warning message in both verbose and quiet modes.
`static void`	`quietAndWarn(IgniteLogger log, Object msg, Object shortMsg)`	Logs warning message in both verbose and quiet modes.
`static void`	`quietMultipleLines(boolean err, String multiline)`
`static ClusterNode`	`randomServerNode(GridKernalContext ctx)`
`static boolean`	`reachable(InetAddress addr, int reachTimeout)`	Checks if address can be reached using one argument InetAddress.isReachable() version.
`static boolean`	`reachable(NetworkInterface itf, InetAddress addr, int reachTimeout)`	Checks if address can be reached using three argument InetAddress.isReachable() version.
`static String`	`readableSize(long bytes, boolean si)`
`static @Nullable Object[]`	`readArray(ObjectInput in)`	Reads array from input stream.
`static <T> @Nullable T[]`	`readArray(ObjectInput in, Class<T> cls)`	Reads typed array from input stream.
`static @org.jetbrains.annotations.Nullable boolean[]`	`readBooleanArray(DataInput in)`	Reads boolean array from input stream accounting for `null` values.
`static @org.jetbrains.annotations.Nullable byte[]`	`readByteArray(DataInput in)`	Reads byte array from input stream accounting for `null` values.
`static byte[]`	`readByteArray(ByteBuffer... bufs)`	Reads byte array from given buffers (changing buffer positions).
`static @Nullable List<Byte>`	`readByteList(DataInput in)`	// FIXME: added for DR dataCenterIds, review if it is needed after GG-6879.
`static List<byte[]>`	`readBytesList(DataInput in)`	Reads collection of byte arrays from data input.
`static @Nullable Class<?>[]`	`readClassArray(ObjectInput in)`	Reads array from input stream.
`static <E> @Nullable Collection<E>`	`readCollection(ObjectInput in)`
`static <E extends Enum<E>> E`	`readEnum(DataInput in, Class<E> enumCls)`
`static String`	`readFileToString(String fileName, String charset)`	Reads file to string using specified charset.
`static <K,V> @Nullable HashMap<K,V>`	`readHashMap(ObjectInput in)`	Read hash map.
`static @Nullable IgniteUuid`	`readIgniteUuid(DataInput in)`	Reads `IgniteUuid` from input stream.
`static @Nullable List<IgniteUuid>`	`readIgniteUuids(DataInput in)`	Reads Ignite UUIDs from input stream.
`static @org.jetbrains.annotations.Nullable int[]`	`readIntArray(DataInput in)`	Reads int array from input stream accounting for `null` values.
`static @Nullable Collection<Integer>`	`readIntCollection(DataInput in)`
`static @Nullable Map<Integer,Integer>`	`readIntKeyIntValueMap(DataInput in)`
`static <V> @Nullable Map<Integer,V>`	`readIntKeyMap(ObjectInput in)`
`static @Nullable List<Integer>`	`readIntList(DataInput in)`
`static @Nullable Set<Integer>`	`readIntSet(DataInput in)`
`static <K,V> @Nullable LinkedHashMap<K,V>`	`readLinkedMap(ObjectInput in)`
`static <E> @Nullable List<E>`	`readList(ObjectInput in)`
`static @org.jetbrains.annotations.Nullable long[]`	`readLongArray(DataInput in)`	Reads long array from input stream.
`static @Nullable String`	`readLongString(DataInput in)`	Reads string from input stream accounting for `null` values.
`static <K,V> @Nullable Map<K,V>`	`readMap(ObjectInput in)`
`static <E> @Nullable Set<E>`	`readSet(ObjectInput in)`
`static @Nullable String`	`readString(DataInput in)`	Reads string from input stream accounting for `null` values.
`static Map<String,String>`	`readStringMap(DataInput in)`	Reads string-to-string map written by `writeStringMap(DataOutput, Map)`.
`static <K,V> @Nullable TreeMap<K,V>`	`readTreeMap(ObjectInput in)`
`static String`	`readUTF(DataInput in)`	Read UTF string which can be `null`.
`static @Nullable UUID`	`readUuid(DataInput in)`	Reads UUID from input stream.
`static @Nullable UUID`	`readUuid(BinaryRawReader in)`	Reads UUID from binary reader.
`static @Nullable List<UUID>`	`readUuids(DataInput in)`	Reads UUIDs from input stream.
`static <T> ObjectName`	`registerMBean(MBeanServer mbeanSrv, @Nullable String igniteInstanceName, @Nullable String grp, String name, T impl, @Nullable Class<T> itf)`	Registers MBean with the server.
`static <T> ObjectName`	`registerMBean(MBeanServer mbeanSrv, ObjectName name, T impl, Class<T> itf)`	Registers MBean with the server.
`static boolean`	`relaxDiscoveryOrdered()`
`static void`	`releaseQuiet(@Nullable FileLock lock)`	Quietly releases file lock ignoring all possible exceptions.
`static void`	`removeJavaNoOpLogger(Collection<Handler> rmvHnds)`	Removes previously added no-op handler for root java logger.
`static Collection<InetSocketAddress>`	`resolveAddresses(AddressResolver addrRslvr, Iterable<String> addrs, int port)`	Resolves all not loopback addresses and collect results.
`static Collection<InetSocketAddress>`	`resolveAddresses(AddressResolver addrRslvr, Collection<InetSocketAddress> sockAddr)`
`static ClassLoader`	`resolveClassLoader(ClassLoader ldr, IgniteConfiguration cfg)`
`static ClassLoader`	`resolveClassLoader(IgniteConfiguration cfg)`
`static @Nullable File`	`resolveIgnitePath(String path)`	Gets file associated with path.
`static @Nullable URL`	`resolveIgniteUrl(String path)`	Gets URL representing the path passed in.
`static @Nullable URL`	`resolveIgniteUrl(String path, boolean metaInf)`	Gets URL representing the path passed in.
`static IgniteBiTuple<Collection<String>,Collection<String>>`	`resolveLocalAddresses(InetAddress locAddr)`	Returns host names consistent with `resolveLocalHost(String)`.
`static IgniteBiTuple<Collection<String>,Collection<String>>`	`resolveLocalAddresses(InetAddress locAddr, boolean allHostNames)`	Returns host names consistent with `resolveLocalHost(String)`.
`static InetAddress`	`resolveLocalHost(@Nullable String hostName)`	Tries to resolve host by name, returning local host if input is empty.
`static URL`	`resolveSpringUrl(String springCfgPath)`	Resolve Spring configuration URL.
`static File`	`resolveWorkDirectory(String workDir, String path, boolean delIfExist)`	Resolves work directory.
`static File`	`resolveWorkDirectory(String workDir, String path, boolean delIfExist, boolean create)`	Resolves work directory.
`static void`	`restoreDeploymentContext(GridKernalContext ctx, IgniteUuid ldrId)`	Restores a deployment context for cache deployment.
`static void`	`restoreOldIgniteName(@Nullable String oldName, @Nullable String curName)`	Restore old Ignite name.
`static void`	`rollbackConnection(@Nullable Connection rsrc, @Nullable IgniteLogger log)`	Rollbacks JDBC connection logging possible checked exception.
`static void`	`rollbackConnectionQuiet(@Nullable Connection rsrc)`	Quietly rollbacks JDBC connection ignoring possible checked exception.
`static int`	`safeAbs(int i)`	Gets absolute value for integer.
`static long`	`safeAbs(long i)`	Gets absolute value for long.
`static boolean`	`sameMacs(ClusterNode loc, ClusterNode rmt)`
`static <E> List<E>`	`sealList(E... a)`	Convert array to seal list.
`static <E> List<E>`	`sealList(Collection<E> c)`	Seal collection.
`static <K,V> Map<K,V>`	`sealMap(Map<K,V> m)`
`static Path`	`searchFileRecursively(Path path, @NotNull String name)`
`static @Nullable String`	`setCurrentIgniteName(@Nullable String newName)`	Set current Ignite name.
`static void`	`setIgniteHome(@Nullable String path)`
`static byte[]`	`shortToBytes(short s)`	Converts primitive `short` type to byte array.
`static int`	`shortToBytes(short s, byte[] bytes, int off)`	Converts primitive `short` type to byte array and stores it in specified byte array.
`static void`	`shutdownNow(Class<?> owner, @Nullable ExecutorService exec, @Nullable IgniteLogger log)`	Shutdowns given `ExecutorService` and wait for executor service to stop.
`static int`	`sizeInMegabytes(long sizeInBytes)`	Converts size in bytes to human-readable size in megabytes.
`static void`	`sleep(long ms)`	Sleeps for given number of milliseconds.
`static String`	`spiAttribute(IgniteSpi spi, String attrName)`	Creates SPI attribute name by adding prefix to the attribute name.
`static String`	`stackTrace()`
`static void`	`startLifecycleAware(Iterable<?> objs)`	For each object provided by the given `Iterable` checks if it implements `LifecycleAware` interface and executes `LifecycleAware.start()` method.
`static void`	`startThreads(Iterable<? extends Thread> threads)`	Starts given threads.
`static <T> T`	`staticField(Class<?> cls, String fieldName)`	Gets static field value.
`static void`	`stopLifecycleAware(IgniteLogger log, Iterable<?> objs)`	For each object provided by the given `Iterable` checks if it implements `LifecycleAware` interface and executes `LifecycleAware.stop()` method.
`static int`	`stripeIdx(int stripes, int grpId, int partId)`
`static @Nullable Object`	`sunReflectionFactory()`	SUN JDK specific reflection factory for objects without public constructor.
`static void`	`swap(Object[] arr, int a, int b)`	Swaps two objects in array.
`static String`	`threadName(long threadId)`
`static <T> T[]`	`toArray(Collection<? extends T> c, T[] arr)`	Copies all elements from collection to array and asserts that array is big enough to hold the collection.
`static byte[]`	`toBytes(Serializable obj)`	Serialize object to byte array.
`static int`	`toDigit(char ch, int idx)`	Converts a hexadecimal character to an integer.
`static String`	`toHexString(long addr, int len)`
`static String`	`toHexString(ByteBuffer buf)`
`static int[]`	`toIntArray(@Nullable Collection<Integer> c)`	Converts collection of integers into array.
`static List<Integer>`	`toIntList(@org.jetbrains.annotations.Nullable int[] arr, IgnitePredicate<Integer>... p)`	Converts array of integers into list.
`static long`	`toLong(int high, int low)`	Concats two integers to long.
`static long[]`	`toLongArray(@Nullable Collection<Long> c)`	Converts collection of integers into array.
`static List<Long>`	`toLongList(@org.jetbrains.annotations.Nullable long[] arr)`	Converts array of longs into list.
`static String`	`toShortString(Collection<? extends ClusterNode> ns)`	Short node representation.
`static String`	`toShortString(ClusterNode n)`	Short node representation.
`static Collection<InetSocketAddress>`	`toSocketAddresses(Collection<String> addrs, Collection<String> hostNames, int port)`	Returns the list of resolved socket addresses.
`static Collection<InetSocketAddress>`	`toSocketAddresses(ClusterNode node, int port)`	Returns the list of resolved socket addresses.
`static @Nullable String`	`toStringSafe(@Nullable Object obj)`	Get string representation of an object properly catching all exceptions.
`static boolean`	`tryAcquire(Semaphore sem, long timeout, TimeUnit unit)`	Tries to acquire a permit from provided semaphore during `timeout`.
`static long`	`uncompressedSize(File zip)`	Getting the total size of uncompressed data in zip.
`static int[]`	`unique(int[] a, int aLen, int[] b, int bLen)`	Returns array which is the union of two arrays (array of elements contained in any of provided arrays).
`static <T> T`	`unmarshal(GridKernalContext ctx, byte[] arr, @Nullable ClassLoader clsLdr)`	Unmarshals object from the input stream using given class loader.
`static <T> T`	`unmarshal(GridCacheSharedContext ctx, byte[] arr, @Nullable ClassLoader clsLdr)`	Unmarshals object from the input stream using given class loader.
`static <T> T`	`unmarshal(Marshaller marsh, byte[] arr, @Nullable ClassLoader clsLdr)`	Unmarshals object from the input stream using given class loader.
`static <T> T`	`unmarshal(Marshaller marsh, InputStream in, @Nullable ClassLoader clsLdr)`	Unmarshals object from the input stream using given class loader.
`static <T> T`	`unmarshalZip(Marshaller marsh, byte[] zipBytes, @Nullable ClassLoader clsLdr)`
`static String`	`unquote(String s)`	Unquote the given string.
`static Exception`	`unwrap(Throwable t)`	Unwraps closure exceptions.
`static byte[]`	`unzip(byte[] zipBytes)`
`static void`	`unzip(File zipFile, File toDir, @Nullable IgniteLogger log)`	Unzip file to folder.
`static int`	`utfBytes(char c)`	Get number of bytes for `DataOutput.writeUTF(java.lang.String)`, depending on character: One byte - If a character `c` is in the range `\u0001` through `\u007f`. Two bytes - If a character `c` is `\u0000` or is in the range `\u0080` through `\u07ff`.
`static byte[]`	`uuidToBytes(@Nullable UUID uuid)`	Converts an UUID to byte array.
`static int`	`uuidToBytes(@Nullable UUID uuid, byte[] arr, int off)`	Encodes `UUID` into a sequence of bytes using the `ByteBuffer`, storing the result into a new byte array.
`static void`	`wait(Object mux)`	Converts `InterruptedException` to `IgniteCheckedException`.
`static void`	`warn(@Nullable IgniteLogger log, Object msg)`	Depending on whether or not log is provided and quiet mode is enabled logs given messages as quiet message or normal log WARN message.
`static void`	`warn(@Nullable IgniteLogger log, Object msg, @Nullable Throwable e)`	Depending on whether or not log is provided and quiet mode is enabled logs given messages as quiet message or normal log WARN message.
`static void`	`warnDevOnly(@Nullable IgniteLogger log, Object msg)`	Depending on whether or not log is provided and quiet mode is enabled logs given messages as quiet message or normal log WARN message with `DEV_ONLY` marker.
`static <E extends Throwable> E`	`withCause(E e, @Nullable Throwable cause)`	Utility method that sets cause into exception and returns it.
`static String`	`workDirectory(@Nullable String userWorkDir, @Nullable String userIgniteHome)`	Get work directory for the given user-provided work directory and Ignite home.
`static Runnable`	`wrapIgniteFuture(Runnable r, GridFutureAdapter<?> fut)`
`static void`	`wrapThreadLoader(ClassLoader ldr, Runnable c)`	Sets thread context class loader to the given loader, executes the closure, and then resets thread context class loader to its initial value.
`static <R> R`	`wrapThreadLoader(ClassLoader ldr, Callable<R> c)`	Sets thread context class loader to the given loader, executes the closure, and then resets thread context class loader to its initial value.
`static <R> R`	`wrapThreadLoader(ClassLoader ldr, IgniteOutClosure<R> c)`	Sets thread context class loader to the given loader, executes the closure, and then resets thread context class loader to its initial value.
`static <T> void`	`writeArray(ObjectOutput out, T[] arr)`	Writes array to output stream.
`static void`	`writeBooleanArray(DataOutput out, @org.jetbrains.annotations.Nullable boolean[] arr)`	Writes boolean array to output stream accounting for `null` values.
`static void`	`writeByteArray(DataOutput out, @org.jetbrains.annotations.Nullable byte[] arr)`	Writes byte array to output stream accounting for `null` values.
`static void`	`writeByteArray(DataOutput out, @org.jetbrains.annotations.Nullable byte[] arr, int maxLen)`	Writes byte array to output stream accounting for `null` values.
`static void`	`writeByteCollection(DataOutput out, Collection<Byte> col)`	// FIXME: added for DR dataCenterIds, review if it is needed after GG-6879.
`static void`	`writeBytesCollection(DataOutput out, Collection<byte[]> bytes)`	Writes collection of byte arrays to data output.
`static void`	`writeCollection(ObjectOutput out, Collection<?> col)`
`static void`	`writeCutString(DataOutput out, @Nullable String s)`	Writes string to output stream accounting for `null` values.
`static <E extends Enum<E>> void`	`writeEnum(DataOutput out, E e)`	Writes enum to output stream accounting for `null` values.
`static void`	`writeFully(SocketChannel sockCh, ByteBuffer buf)`	Safely write buffer fully to blocking socket channel.
`static void`	`writeIgniteUuid(DataOutput out, IgniteUuid uid)`	Writes `IgniteUuid` to output stream.
`static void`	`writeIgniteUuids(DataOutput out, @Nullable Collection<IgniteUuid> col)`	Writes Ignite UUIDs to output stream.
`static void`	`writeIntArray(DataOutput out, @org.jetbrains.annotations.Nullable int[] arr)`	Writes int array to output stream accounting for `null` values.
`static void`	`writeIntCollection(DataOutput out, Collection<Integer> col)`
`static void`	`writeIntKeyIntValueMap(DataOutput out, Map<Integer,Integer> map)`
`static void`	`writeIntKeyMap(ObjectOutput out, Map<Integer,?> map)`
`static void`	`writeLock(ReadWriteLock lock)`
`static void`	`writeLongArray(DataOutput out, @org.jetbrains.annotations.Nullable long[] arr)`	Writes long array to output stream.
`static void`	`writeLongString(DataOutput out, @Nullable String s)`	Writes string to output stream accounting for `null` values.
`static void`	`writeMap(ObjectOutput out, Map<?,?> map)`
`static int`	`writeMessageFully(Message msg, OutputStream out, ByteBuffer buf, MessageWriter writer)`	Fully writes communication message to provided stream.
`static void`	`writeString(DataOutput out, String s)`	Writes string to output stream accounting for `null` values.
`static void`	`writeStringMap(DataOutput out, @Nullable Map<String,String> map)`	Writes string-to-string map to given data output.
`static void`	`writeStringToFile(File file, String s)`	Writes string to file.
`static void`	`writeStringToFile(File file, String s, String charset)`	Writes string to file.
`static void`	`writeStringToFile(File file, String s, String charset, boolean append)`	Writes string to file.
`static void`	`writeUTF(DataOutput out, @Nullable String val)`	Write UTF string which can be `null`.
`static void`	`writeUuid(DataOutput out, UUID uid)`	Writes UUID to output stream.
`static void`	`writeUuid(BinaryRawWriter out, UUID uid)`	Writes UUID to binary writer.
`static void`	`writeUuids(DataOutput out, @Nullable Collection<UUID> col)`	Writes UUIDs to output stream.
`static ClusterNode`	`youngest(Collection<ClusterNode> c, @Nullable IgnitePredicate<ClusterNode> p)`	Gets youngest node out of collection of nodes.
`static byte[]`	`zip(@org.jetbrains.annotations.Nullable byte[] bytes)`	Zip binary payload using default compression.
`static byte[]`	`zip(@org.jetbrains.annotations.Nullable byte[] bytes, int compressionLevel)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - KB
```
public static final long KB
```
    See Also:
    
    Constant Field Values
  - MB
```
public static final long MB
```
    See Also:
    
    Constant Field Values
  - GB
```
public static final long GB
```
    See Also:
    
    Constant Field Values
  - UTF_BYTE_LIMIT
```
public static final int UTF_BYTE_LIMIT
```
    String limit in bytes for DataOutput.writeUTF(java.lang.String) and DataInput.readUTF(), that use "Modified UTF-8".
    
    See Also:
    
    Constant Field Values
  - DFLT_MIN_CHECKPOINTING_PAGE_BUFFER_SIZE
```
public static final Long DFLT_MIN_CHECKPOINTING_PAGE_BUFFER_SIZE
```
    Minimum checkpointing page buffer size (may be adjusted by Ignite).
  - DFLT_MAX_CHECKPOINTING_PAGE_BUFFER_SIZE
```
public static final Long DFLT_MAX_CHECKPOINTING_PAGE_BUFFER_SIZE
```
    Default minimum checkpointing page buffer size (may be adjusted by Ignite).
  - DFLT_MBEAN_APPEND_CLASS_LOADER_ID
```
public static final boolean DFLT_MBEAN_APPEND_CLASS_LOADER_ID
```
    See Also:
    
    IgniteSystemProperties.IGNITE_MBEAN_APPEND_CLASS_LOADER_ID, Constant Field Values
  - EMPTY_INTS
```
public static final int[] EMPTY_INTS
```
    Empty integers array.
  - EMPTY_LONGS
```
public static final long[] EMPTY_LONGS
```
    Empty longs array.
  - EMPTY_STRS
```
public static final String[] EMPTY_STRS
```
    Empty strings array.
  - EMPTY_FIELDS
```
public static final Field[] EMPTY_FIELDS
```
    Empty fields array.
  - EMPTY_UUIDS
```
public static final UUID[] EMPTY_UUIDS
```
  - DFLT_USER_VERSION
```
public static final String DFLT_USER_VERSION
```
    Default user version.
    
    See Also:
    
    Constant Field Values
  - THREAD_DUMP_MSG
```
public static final String THREAD_DUMP_MSG
```
    Thread dump message.
    
    See Also:
    
    Constant Field Values
  - NUMBER_FILE_NAME_LENGTH
```
public static final int NUMBER_FILE_NAME_LENGTH
```
    Length of numbered file name.
    
    See Also:
    
    Constant Field Values
  - IGNITE_PKG
```
public static final String IGNITE_PKG
```
    Ignite package.
    
    See Also:
    
    Constant Field Values
  - JMX_DOMAIN
```
public static final String JMX_DOMAIN
```
    JMX domain as 'xxx.apache.ignite'.
  - IGNITE_HEADER
```
public static final byte[] IGNITE_HEADER
```
    Network packet header.
  - LONG_DATE_FMT
```
public static final DateTimeFormatter LONG_DATE_FMT
```
    Long date format pattern for log messages.
  - SHORT_DATE_FMT
```
public static final DateTimeFormatter SHORT_DATE_FMT
```
    Short date format pattern for log messages in "quiet" mode. Only time is included since we don't expect "quiet" mode to be used for longer runs.
  - DEBUG_DATE_FMT
```
public static final DateTimeFormatter DEBUG_DATE_FMT
```
    Debug date format.
  - INTERFACE_SUPPLIER
```
public static IgniteUtils.InterfaceSupplier INTERFACE_SUPPLIER
```
    Supplier of network interfaces. Could be used for tests purposes, must not be changed in production code.
  - MAC_INVALID_ARG_MSG
```
public static final String MAC_INVALID_ARG_MSG
```
    MAC OS invalid argument socket error message.
    
    See Also:
    
    Constant Field Values
  - DELIM
```
public static final String DELIM
```
    See Also:
    
    Constant Field Values
  - IGNITE_LOG_DIR
```
public static final String IGNITE_LOG_DIR
```
    Ignite Logging Directory.
  - IGNITE_WORK_DIR
```
public static final String IGNITE_WORK_DIR
```
    Ignite Work Directory.
  - LOC_IGNITE_NAME_EMPTY
```
public static final String LOC_IGNITE_NAME_EMPTY
```
    Empty local Ignite name.
  - IGNITE_MBEANS_DISABLED
```
public static boolean IGNITE_MBEANS_DISABLED
```
    Ignite MBeans disabled flag.
  - IGNITE_TEST_FEATURES_ENABLED
```
public static boolean IGNITE_TEST_FEATURES_ENABLED
```
    Ignite test features enabled flag.
  - IGNITE_SUCCESS_FILE_PROPERTY
```
public static final String IGNITE_SUCCESS_FILE_PROPERTY
```
    Success file name property. This file is used with auto-restarting functionality when Ignite is started by supplied ignite.{bat|sh} scripts.
  - IGNITE_JMX_REMOTE_PROPERTY
```
public static final String IGNITE_JMX_REMOTE_PROPERTY
```
    JMX remote system property. Setting this property registered the Java VM platform's MBeans and published the Remote Method Invocation (RMI) connector via a private interface to allow JMX client applications to monitor a local Java platform, that is, a Java VM running on the same machine as the JMX client.
- Constructor Detail
  - IgniteUtils
```
public IgniteUtils()
```
- Method Detail
  - getExceptionConverter
```
public static C1<IgniteCheckedException,IgniteException> getExceptionConverter(Class<? extends IgniteCheckedException> clazz)
```
    Gets IgniteClosure for an IgniteCheckedException class.
    
    Parameters:
    
    clazz - Class.
    
    Returns:
    
    The IgniteClosure mapped to this exception class, or null if none.
  - allPluginProviders
```
public static List<PluginProvider> allPluginProviders()
```
    Gets all plugin providers.
    
    Returns:
    
    Plugins.
  - allPluginProviders
```
public static List<PluginProvider> allPluginProviders(IgniteConfiguration cfg,
                                                      boolean includeClsPath)
```
    Gets all plugin providers.
    
    Parameters:
    
    cfg - Configuration.
    
    includeClsPath - Include classpath plugins on empty config.
    
    Returns:
    
    Plugins.
  - loadService
```
public static <S> Iterable<S> loadService(Class<S> svcCls)
```
    Type Parameters:
    
    S - Type of loaded interfaces.
    
    Parameters:
    
    svcCls - Service class to load.
    
    Returns:
    
    Lazy iterable structure over loaded class implementations.
  - convertExceptionNoWrap
```
public static Exception convertExceptionNoWrap(IgniteCheckedException e)
```
    Converts exception, but unlike convertException(IgniteCheckedException) does not wrap passed in exception if none suitable converter found.
    
    Parameters:
    
    e - Ignite checked exception.
    
    Returns:
    
    Ignite runtime exception.
  - convertException
```
public static IgniteException convertException(IgniteCheckedException e)
```
    Parameters:
    
    e - Ignite checked exception.
    
    Returns:
    
    Ignite runtime exception.
  - currentTimeMillis
```
public static long currentTimeMillis()
```
    Returns:
    
    System time approximated by 10 ms.
  - millisToNanos
```
public static long millisToNanos(long millis)
```
    Convert milliseconds time interval to nanoseconds.
    
    Parameters:
    
    millis - Original time interval.
    
    Returns:
    
    Calculated time interval.
  - nanosToMillis
```
public static long nanosToMillis(long nanos)
```
    Convert nanoseconds time interval to milliseconds.
    
    Parameters:
    
    nanos - Original time interval.
    
    Returns:
    
    Calculated time interval.
  - millisSinceNanos
```
public static long millisSinceNanos(long nanos)
```
    Returns number of milliseconds passed after the given nanos timestamp.
    
    Parameters:
    
    nanos - Nanos timestamp.
    
    Returns:
    
    Number of milliseconds passed after the given nanos timestamp.
    
    See Also:
    
    System.nanoTime()
  - ceilPow2
```
public static int ceilPow2(int v)
```
    Gets nearest power of 2 larger or equal than v.
    
    Parameters:
    
    v - Value.
    
    Returns:
    
    Nearest power of 2.
  - isPow2
```
public static boolean isPow2(int i)
```
    Parameters:
    
    i - Value.
    
    Returns:
    
    true If the given value is power of 2 (0 is not power of 2).
  - ctorFactory
```
@Nullable
public static @Nullable Method ctorFactory()
```
    Return SUN specific constructor factory.
    
    Returns:
    
    SUN specific constructor factory.
  - objectConstructor
```
public static Constructor objectConstructor()
```
    Returns:
    
    Empty constructor for object class.
  - sunReflectionFactory
```
@Nullable
public static @Nullable Object sunReflectionFactory()
```
    SUN JDK specific reflection factory for objects without public constructor.
    
    Returns:
    
    Reflection factory for objects without public constructor.
  - gridEventName
```
public static String gridEventName(int type)
```
    Gets name for given grid event type.
    
    Parameters:
    
    type - Event type.
    
    Returns:
    
    Event name.
  - gridEvents
```
public static int[] gridEvents(int... excl)
```
    Gets all event types.
    
    Parameters:
    
    excl - Optional exclude events.
    
    Returns:
    
    All events minus excluded ones.
  - discoOrdered
```
public static boolean discoOrdered(DiscoverySpi discoSpi)
```
    Parameters:
    
    discoSpi - Discovery SPI.
    
    Returns:
    
    True if ordering is supported.
  - relaxDiscoveryOrdered
```
public static boolean relaxDiscoveryOrdered()
```
    Returns:
    
    Checks if disco ordering should be enforced.
  - debug
```
@Deprecated
public static void debug(Object msg)
```
    Deprecated.
    Calls to this method should never be committed to master.
    
    This method should be used for adding quick debug statements in code while debugging. Calls to this method should never be committed to master.
    
    Parameters:
    
    msg - Message to debug.
  - debugx
```
@Deprecated
public static void debugx(String msg)
```
    Deprecated.
    Calls to this method should never be committed to master.
    
    This method should be used for adding quick debug statements in code while debugging. Calls to this method should never be committed to master.
    
    Parameters:
    
    msg - Message to debug.
  - debug
```
@Deprecated
public static void debug(IgniteLogger log,
                         String msg)
```
    Deprecated.
    Calls to this method should never be committed to master.
    
    This method should be used for adding quick debug statements in code while debugging. Calls to this method should never be committed to master.
    
    Parameters:
    
    log - Logger.
    
    msg - Message to debug.
  - dumpStack
```
@Deprecated
public static void dumpStack()
```
    Deprecated.
    Calls to this method should never be committed to master.
    
    Prints stack trace of the current thread to System.out.
  - dumpStack
```
@Deprecated
public static void dumpStack(String msg)
```
    Deprecated.
    Calls to this method should never be committed to master.
    
    Prints stack trace of the current thread to System.out.
    
    Parameters:
    
    msg - Message to print with the stack.
  - dumpStack
```
public static void dumpStack(@Nullable
                             @Nullable IgniteLogger log,
                             String msg)
```
    Parameters:
    
    log - Logger.
    
    msg - Message.
  - dumpStack
```
@Deprecated
public static void dumpStack(String msg,
                             PrintStream out)
```
    Deprecated.
    Calls to this method should never be committed to master.
    
    Prints stack trace of the current thread to provided output stream.
    
    Parameters:
    
    msg - Message to print with the stack.
    
    out - Output to dump stack to.
  - debugStack
```
@Deprecated
public static void debugStack(IgniteLogger log,
                              String msg)
```
    Deprecated.
    Calls to this method should never be committed to master.
    
    Prints stack trace of the current thread to provided logger.
    
    Parameters:
    
    log - Logger.
    
    msg - Message to print with the stack.
  - debugHeapUsage
```
public static void debugHeapUsage()
```
    Prints heap usage.
  - heapSize
```
public static double heapSize(ClusterNode node,
                              int precision)
```
    Gets heap size in GB rounded to specified precision.
    
    Parameters:
    
    node - Node.
    
    precision - Precision.
    
    Returns:
    
    Heap size in GB.
  - heapSize
```
public static double heapSize(Iterable<ClusterNode> nodes,
                              int precision)
```
    Gets total heap size in GB rounded to specified precision.
    
    Parameters:
    
    nodes - Nodes.
    
    precision - Precision.
    
    Returns:
    
    Total heap size in GB.
  - offheapSize
```
public static double offheapSize(Iterable<ClusterNode> nodes,
                                 int precision)
```
    Gets total offheap size in GB rounded to specified precision.
    
    Parameters:
    
    nodes - Nodes.
    
    precision - Precision.
    
    Returns:
    
    Total offheap size in GB.
  - heapSize
```
public static double heapSize(int precision)
```
    Returns current JVM maxMemory in the same format as heapSize(ClusterNode, int).
    
    Parameters:
    
    precision - Precision.
    
    Returns:
    
    Maximum memory size in GB.
  - dumpThreads
```
public static void dumpThreads(@Nullable
                               @Nullable IgniteLogger log)
```
    Performs thread dump and prints all available info to the given log with WARN logging level.
    
    Parameters:
    
    log - Logger.
  - dumpThreads
```
public static void dumpThreads(@Nullable
                               @Nullable IgniteLogger log,
                               boolean isErrorLevel)
```
    Performs thread dump and prints all available info to the given log with WARN or ERROR logging level depending on isErrorLevel parameter.
    
    Parameters:
    
    log - Logger.
    
    isErrorLevel - true if thread dump must be printed with ERROR logging level, false if thread dump must be printed with WARN logging level.
  - printStackTrace
```
public static void printStackTrace(long threadId,
                                   GridStringBuilder sb)
```
    Parameters:
    
    threadId - Thread ID.
    
    sb - Builder.
  - stackTrace
```
public static String stackTrace()
```
    Returns:
    
    Stacktrace of current thread as String.
  - deadlockPresent
```
public static boolean deadlockPresent()
```
    Returns:
    
    true if there is java level deadlock.
  - forceEmptyConstructor
```
@Nullable
public static @Nullable Constructor<?> forceEmptyConstructor(Class<?> cls)
                                                      throws IgniteCheckedException
```
    Gets empty constructor for class even if the class does not have empty constructor declared. This method is guaranteed to work with SUN JDK and other JDKs still need to be tested.
    
    Parameters:
    
    cls - Class to get empty constructor for.
    
    Returns:
    
    Empty constructor if one could be found or null otherwise.
    
    Throws:
    
    IgniteCheckedException - If failed.
  - classForName
```
@Nullable
public static @Nullable Class<?> classForName(@Nullable
                                              @Nullable String cls,
                                              @Nullable
                                              @Nullable Class<?> dflt)
```
    Gets class for the given name if it can be loaded or default given class.
    
    Parameters:
    
    cls - Class.
    
    dflt - Default class to return.
    
    Returns:
    
    Class or default given class if it can't be found.
  - classForName
```
@Nullable
public static @Nullable Class<?> classForName(@Nullable
                                              @Nullable String cls,
                                              @Nullable
                                              @Nullable Class<?> dflt,
                                              boolean includePrimitiveTypes)
```
    Gets class for the given name if it can be loaded or default given class.
    
    Parameters:
    
    cls - Class.
    
    dflt - Default class to return.
    
    includePrimitiveTypes - Whether class resolution should include primitive types (i.e. "int" will resolve to int.class if flag is set)
    
    Returns:
    
    Class or default given class if it can't be found.
  - newInstance
```
@Nullable
public static <T> T newInstance(String cls)
                         throws IgniteCheckedException
```
    Creates new instance of a class only if it has an empty constructor (can be non-public).
    
    Parameters:
    
    cls - Class name.
    
    Returns:
    
    Instance.
    
    Throws:
    
    IgniteCheckedException - If failed.
  - newInstance
```
@Nullable
public static <T> T newInstance(Class<T> cls)
                         throws IgniteCheckedException
```
    Creates new instance of a class only if it has an empty constructor (can be non-public).
    
    Parameters:
    
    cls - Class to instantiate.
    
    Returns:
    
    New instance of the class or null if empty constructor could not be assigned.
    
    Throws:
    
    IgniteCheckedException - If failed.
  - inClassPath
```
public static boolean inClassPath(String clsName)
```
    Check whether class is in classpath.
    
    Returns:
    
    True if in classpath.
  - forceNewInstance
```
@Nullable
public static <T> T forceNewInstance(Class<?> cls)
                              throws IgniteCheckedException
```
    Creates new instance of a class even if it does not have public constructor.
    
    Parameters:
    
    cls - Class to instantiate.
    
    Returns:
    
    New instance of the class or null if empty constructor could not be assigned.
    
    Throws:
    
    IgniteCheckedException - If failed.
  - formatMins
```
public static String formatMins(long mins)
```
    Pretty-formatting for minutes.
    
    Parameters:
    
    mins - Minutes to format.
    
    Returns:
    
    Formatted presentation of minutes.
  - id8
```
public static String id8(UUID id)
```
    Gets 8-character substring of UUID (for terse logging).
    
    Parameters:
    
    id - Input ID.
    
    Returns:
    
    8-character ID substring.
  - id8
```
public static String id8(IgniteUuid id)
```
    Gets 8-character substring of IgniteUuid (for terse logging). The ID8 will be constructed as follows:
    
    Take first 4 digits for global ID, i.e. IgniteUuid.globalId().
    
    Take last 4 digits for local ID, i.e. IgniteUuid.localId().
    Parameters:
    
    id - Input ID.
    
    Returns:
    
    8-character representation of IgniteUuid.
  - filler
```
public static String filler(int len,
                            char ch)
```
    Parameters:
    
    len - Number of characters to fill in.
    
    ch - Character to fill with.
    
    Returns:
    
    String.
  - writeArray
```
public static <T> void writeArray(ObjectOutput out,
                                  T[] arr)
                           throws IOException
```
    Writes array to output stream.
    
    Type Parameters:
    
    T - Array type.
    
    Parameters:
    
    out - Output stream.
    
    arr - Array to write.
    
    Throws:
    
    IOException - If failed.
  - readArray
```
@Nullable
public static @Nullable Object[] readArray(ObjectInput in)
                                    throws IOException,
                                           ClassNotFoundException
```
    Reads array from input stream.
    
    Parameters:
    
    in - Input stream.
    
    Returns:
    
    Deserialized array.
    
    Throws:
    
    IOException - If failed.
    
    ClassNotFoundException - If class not found.
  - readArray
```
@Nullable
public static <T> @Nullable T[] readArray(ObjectInput in,
                                          Class<T> cls)
                                   throws IOException,
                                          ClassNotFoundException
```
    Reads typed array from input stream.
    
    Parameters:
    
    in - Input stream.
    
    Returns:
    
    Deserialized array.
    
    Throws:
    
    IOException - If failed.
    
    ClassNotFoundException - If class not found.
  - readClassArray
```
@Nullable
public static @Nullable Class<?>[] readClassArray(ObjectInput in)
                                           throws IOException,
                                                  ClassNotFoundException
```
    Reads array from input stream.
    
    Parameters:
    
    in - Input stream.
    
    Returns:
    
    Deserialized array.
    
    Throws:
    
    IOException - If failed.
    
    ClassNotFoundException - If class not found.
  - writeCollection
```
public static void writeCollection(ObjectOutput out,
                                   Collection<?> col)
                            throws IOException
```
    Parameters:
    
    out - Output.
    
    col - Set to write.
    
    Throws:
    
    IOException - If write failed.
  - writeIntCollection
```
public static void writeIntCollection(DataOutput out,
                                      Collection<Integer> col)
                               throws IOException
```
    Parameters:
    
    out - Output.
    
    col - Set to write.
    
    Throws:
    
    IOException - If write failed.
  - readCollection
```
@Nullable
public static <E> @Nullable Collection<E> readCollection(ObjectInput in)
                                                  throws IOException,
                                                         ClassNotFoundException
```
    Parameters:
    
    in - Input.
    
    Returns:
    
    Deserialized set.
    
    Throws:
    
    IOException - If deserialization failed.
    
    ClassNotFoundException - If deserialized class could not be found.
  - readIntCollection
```
@Nullable
public static @Nullable Collection<Integer> readIntCollection(DataInput in)
                                                       throws IOException
```
    Parameters:
    
    in - Input.
    
    Returns:
    
    Deserialized set.
    
    Throws:
    
    IOException - If deserialization failed.
  - copyMap
```
public static <K,V> Map<K,V> copyMap(Map<K,V> m)
```
    Type Parameters:
    
    K - Key type.
    
    V - Value type
    
    Parameters:
    
    m - Map to copy.
    
    Returns:
    
    Copied map.
  - sealMap
```
public static <K,V> Map<K,V> sealMap(Map<K,V> m)
```
    Type Parameters:
    
    K - Key type.
    
    V - Value type
    
    Parameters:
    
    m - Map to seal.
    
    Returns:
    
    Sealed map.
  - sealList
```
public static <E> List<E> sealList(Collection<E> c)
```
    Seal collection.
    
    Type Parameters:
    
    E - Entry type
    
    Parameters:
    
    c - Collection to seal.
    
    Returns:
    
    Sealed collection.
  - sealList
```
public static <E> List<E> sealList(E... a)
```
    Convert array to seal list.
    
    Type Parameters:
    
    E - Entry type
    
    Parameters:
    
    a - Array for convert to seal list.
    
    Returns:
    
    Sealed collection.
  - getNetworkInterfaceName
```
@Nullable
public static @Nullable String getNetworkInterfaceName(String addr)
```
    Gets display name of the network interface this IP address belongs to.
    
    Parameters:
    
    addr - IP address for which to find network interface name.
    
    Returns:
    
    Network interface name or null if can't be found.
  - resolveLocalHost
```
public static InetAddress resolveLocalHost(@Nullable
                                           @Nullable String hostName)
                                    throws IOException
```
    Tries to resolve host by name, returning local host if input is empty. This method reflects how IgniteConfiguration.getLocalHost() should be handled in most places.
    
    Parameters:
    
    hostName - Hostname or null if local host should be returned.
    
    Returns:
    
    Address of given host or of localhost.
    
    Throws:
    
    IOException - If attempt to get local host failed.
  - isLocalHostChanged
```
public static boolean isLocalHostChanged()
                                  throws IOException
```
    Determines whether current local host is different from previously cached.
    
    Returns:
    
    true or false depending on whether or not local host has changed from the cached value.
    
    Throws:
    
    IOException - If attempt to get local host failed.
  - filterReachable
```
public static List<InetAddress> filterReachable(Collection<InetAddress> addrs)
```
    Parameters:
    
    addrs - Addresses.
    
    Returns:
    
    List of reachable addresses.
  - resolveLocalAddresses
```
public static IgniteBiTuple<Collection<String>,Collection<String>> resolveLocalAddresses(InetAddress locAddr)
                                                                                        throws IOException
```
    Returns host names consistent with resolveLocalHost(String). So when it returns a common address this method returns single host name, and when a wildcard address passed this method tries to collect addresses of all available interfaces.
    
    Parameters:
    
    locAddr - Local address to resolve.
    
    Returns:
    
    Resolved available addresses of given local address.
    
    Throws:
    
    IOException - If failed.
  - resolveLocalAddresses
```
public static IgniteBiTuple<Collection<String>,Collection<String>> resolveLocalAddresses(InetAddress locAddr,
                                                                                               boolean allHostNames)
                                                                                        throws IOException
```
    Returns host names consistent with resolveLocalHost(String). So when it returns a common address this method returns single host name, and when a wildcard address passed this method tries to collect addresses of all available interfaces.
    
    Parameters:
    
    locAddr - Local address to resolve.
    
    allHostNames - If true then include host names for all addresses.
    
    Returns:
    
    Resolved available addresses and host names of given local address.
    
    Throws:
    
    IOException - If failed.
  - getLocalHost
```
public static InetAddress getLocalHost()
                                throws IOException
```
    Gets local host. Implementation will first attempt to get a non-loopback address. If that fails, then loopback address will be returned.
    Note that this method is synchronized to make sure that local host initialization happens only once.
    
    Returns:
    
    Address representing local host.
    
    Throws:
    
    IOException - If attempt to get local host failed.
  - reachable
```
public static boolean reachable(NetworkInterface itf,
                                InetAddress addr,
                                int reachTimeout)
```
    Checks if address can be reached using three argument InetAddress.isReachable() version.
    
    Parameters:
    
    itf - Network interface to use for test.
    
    addr - Address to check.
    
    reachTimeout - Timeout for the check.
    
    Returns:
    
    True if address is reachable.
  - reachable
```
public static boolean reachable(InetAddress addr,
                                int reachTimeout)
```
    Checks if address can be reached using one argument InetAddress.isReachable() version.
    
    Parameters:
    
    addr - Address to check.
    
    reachTimeout - Timeout for the check.
    
    Returns:
    
    True if address is reachable.
  - sameMacs
```
public static boolean sameMacs(ClusterNode loc,
                               ClusterNode rmt)
```
    Parameters:
    
    loc - Local node.
    
    rmt - Remote node.
    
    Returns:
    
    Whether given nodes have the same macs.
  - allLocalIps
```
public static Collection<String> allLocalIps()
```
    Gets a list of all local non-loopback IPs known to this JVM. Note that this will include both IPv4 and IPv6 addresses (even if one "resolves" into another). Loopbacks will be skipped.
    
    Returns:
    
    List of all known local IPs (empty list if no addresses available).
  - isLocalAddress
```
public static boolean isLocalAddress(InetAddress addr)
```
    Checks if the address is local.
    
    Parameters:
    
    addr - Address for check.
    
    Returns:
    
    true if address is local, otherwise false
  - allLocalMACs
```
public static Collection<String> allLocalMACs()
```
    Gets a list of all local enabled MACs known to this JVM. It is using hardware address of the network interface that is not guaranteed to be MAC addresses (but in most cases it is).
    Note that if network interface is disabled - its MAC won't be included. All local network interfaces are probed including loopbacks. Virtual interfaces (sub-interfaces) are skipped.
    Note that on linux getHardwareAddress() can return null from time to time if NetworkInterface.getHardwareAddress() method is called from many threads.
    
    Returns:
    
    List of all known enabled local MACs or empty list if no MACs could be found.
  - downloadUrl
```
public static File downloadUrl(URL url,
                               File file)
                        throws IOException
```
    Downloads resource by URL.
    
    Parameters:
    
    url - URL to download.
    
    file - File where downloaded resource should be stored.
    
    Returns:
    
    File where downloaded resource should be stored.
    
    Throws:
    
    IOException - If error occurred.
  - hidePassword
```
@Nullable
public static @Nullable String hidePassword(@Nullable
                                            @Nullable String uri)
```
    Replace password in URI string with a single '*' character.
    Parses given URI by applying ".*://(.*:.*)@.*" regular expression pattern and than if URI matches it replaces password strings between '/' and '@' with '*'.
    
    Parameters:
    
    uri - URI which password should be replaced.
    
    Returns:
    
    Converted URI string
  - gridClassLoader
```
public static ClassLoader gridClassLoader()
```
    Returns:
    
    Class loader used to load Ignite itself.
  - resolveClassLoader
```
public static ClassLoader resolveClassLoader(IgniteConfiguration cfg)
```
    Returns:
    
    ClassLoader at IgniteConfiguration in case it is not null or ClassLoader used to start Ignite.
  - resolveClassLoader
```
public static ClassLoader resolveClassLoader(ClassLoader ldr,
                                             IgniteConfiguration cfg)
```
    Returns:
    
    ClassLoader passed as param in case it is not null or ClassLoader at IgniteConfiguration in case it is not null or ClassLoader used to start Ignite.
  - hasParent
```
public static boolean hasParent(@Nullable
                                @Nullable ClassLoader parent,
                                ClassLoader ldr)
```
    Parameters:
    
    parent - Parent to find.
    
    ldr - Loader to check.
    
    Returns:
    
    True if parent found.
  - writeBytesCollection
```
public static void writeBytesCollection(DataOutput out,
                                        Collection<byte[]> bytes)
                                 throws IOException
```
    Writes collection of byte arrays to data output.
    
    Parameters:
    
    out - Output to write to.
    
    bytes - Collection with byte arrays.
    
    Throws:
    
    IOException - If write failed.
  - readBytesList
```
public static List<byte[]> readBytesList(DataInput in)
                                  throws IOException
```
    Reads collection of byte arrays from data input.
    
    Parameters:
    
    in - Data input to read from.
    
    Returns:
    
    List of byte arrays.
    
    Throws:
    
    IOException - If read failed.
  - writeByteArray
```
public static void writeByteArray(DataOutput out,
                                  @Nullable
                                  @org.jetbrains.annotations.Nullable byte[] arr)
                           throws IOException
```
    Writes byte array to output stream accounting for null values.
    
    Parameters:
    
    out - Output stream to write to.
    
    arr - Array to write, possibly null.
    
    Throws:
    
    IOException - If write failed.
  - writeByteArray
```
public static void writeByteArray(DataOutput out,
                                  @Nullable
                                  @org.jetbrains.annotations.Nullable byte[] arr,
                                  int maxLen)
                           throws IOException
```
    Writes byte array to output stream accounting for null values.
    
    Parameters:
    
    out - Output stream to write to.
    
    arr - Array to write, possibly null.
    
    Throws:
    
    IOException - If write failed.
  - readByteArray
```
@Nullable
public static @org.jetbrains.annotations.Nullable byte[] readByteArray(DataInput in)
                                                                throws IOException
```
    Reads byte array from input stream accounting for null values.
    
    Parameters:
    
    in - Stream to read from.
    
    Returns:
    
    Read byte array, possibly null.
    
    Throws:
    
    IOException - If read failed.
  - readByteArray
```
public static byte[] readByteArray(ByteBuffer... bufs)
```
    Reads byte array from given buffers (changing buffer positions).
    
    Parameters:
    
    bufs - Byte buffers.
    
    Returns:
    
    Byte array.
  - writeByteCollection
```
public static void writeByteCollection(DataOutput out,
                                       Collection<Byte> col)
                                throws IOException
```
    // FIXME: added for DR dataCenterIds, review if it is needed after GG-6879.
    
    Parameters:
    
    out - Output.
    
    col - Set to write.
    
    Throws:
    
    IOException - If write failed.
  - readByteList
```
@Nullable
public static @Nullable List<Byte> readByteList(DataInput in)
                                         throws IOException
```
    // FIXME: added for DR dataCenterIds, review if it is needed after GG-6879.
    
    Parameters:
    
    in - Input.
    
    Returns:
    
    Deserialized list.
    
    Throws:
    
    IOException - If deserialization failed.
  - join
```
public static byte[] join(byte[]... bufs)
```
    Join byte arrays into single one.
    
    Parameters:
    
    bufs - list of byte arrays to concatenate.
    
    Returns:
    
    Concatenated byte's array.
  - byteArray2String
```
public static String byteArray2String(byte[] arr,
                                      String hdrFmt,
                                      String bodyFmt)
```
    Converts byte array to formatted string. If calling:
    ... byte[] data = {10, 20, 30, 40, 50, 60, 70, 80, 90}; U.byteArray2String(data, "0x%02X", ",0x%02X") ...
    the result will be:
    ... 0x0A, 0x14, 0x1E, 0x28, 0x32, 0x3C, 0x46, 0x50, 0x5A ...
    Parameters:
    
    arr - Array of byte.
    
    hdrFmt - C-style string format for the first element.
    
    bodyFmt - C-style string format for second and following elements, if any.
    
    Returns:
    
    String with converted bytes.
  - hexString2ByteArray
```
public static byte[] hexString2ByteArray(String hex)
                                  throws IllegalArgumentException
```
    Convert string with hex values to byte array.
    
    Parameters:
    
    hex - Hexadecimal string to convert.
    
    Returns:
    
    array of bytes defined as hex in string.
    
    Throws:
    
    IllegalArgumentException - If input character differs from certain hex characters.
  - hexLong
```
public static String hexLong(long val)
```
    Gets a hex string representation of the given long value.
    
    Parameters:
    
    val - Value to convert to string.
    
    Returns:
    
    Hex string.
  - hexInt
```
public static String hexInt(int val)
```
    Gets a hex string representation of the given long value.
    
    Parameters:
    
    val - Value to convert to string.
    
    Returns:
    
    Hex string.
  - doubleToBytes
```
public static byte[] doubleToBytes(double d)
```
    Converts primitive double to byte array.
    
    Parameters:
    
    d - Double to convert.
    
    Returns:
    
    Byte array.
  - doubleToBytes
```
public static int doubleToBytes(double d,
                                byte[] bytes,
                                int off)
```
    Converts primitive double type to byte array and stores it in the specified byte array.
    
    Parameters:
    
    d - Double to convert.
    
    bytes - Array of bytes.
    
    off - Offset.
    
    Returns:
    
    New offset.
  - floatToBytes
```
public static byte[] floatToBytes(float f)
```
    Converts primitive float to byte array.
    
    Parameters:
    
    f - Float to convert.
    
    Returns:
    
    Array of bytes.
  - floatToBytes
```
public static int floatToBytes(float f,
                               byte[] bytes,
                               int off)
```
    Converts primitive float to byte array.
    
    Parameters:
    
    f - Float to convert.
    
    bytes - Array of bytes.
    
    off - Offset.
    
    Returns:
    
    New offset.
  - longToBytes
```
public static byte[] longToBytes(long l)
```
    Converts primitive long type to byte array.
    
    Parameters:
    
    l - Long value.
    
    Returns:
    
    Array of bytes.
  - longToBytes
```
public static int longToBytes(long l,
                              byte[] bytes,
                              int off)
```
    Converts primitive long type to byte array and stores it in specified byte array.
    
    Parameters:
    
    l - Long value.
    
    bytes - Array of bytes.
    
    off - Offset in bytes array.
    
    Returns:
    
    Number of bytes overwritten in bytes array.
  - intToBytes
```
public static byte[] intToBytes(int i)
```
    Converts primitive int type to byte array.
    
    Parameters:
    
    i - Integer value.
    
    Returns:
    
    Array of bytes.
  - intToBytes
```
public static int intToBytes(int i,
                             byte[] bytes,
                             int off)
```
    Converts primitive int type to byte array and stores it in specified byte array.
    
    Parameters:
    
    i - Integer value.
    
    bytes - Array of bytes.
    
    off - Offset in bytes array.
    
    Returns:
    
    Number of bytes overwritten in bytes array.
  - shortToBytes
```
public static byte[] shortToBytes(short s)
```
    Converts primitive short type to byte array.
    
    Parameters:
    
    s - Short value.
    
    Returns:
    
    Array of bytes.
  - shortToBytes
```
public static int shortToBytes(short s,
                               byte[] bytes,
                               int off)
```
    Converts primitive short type to byte array and stores it in specified byte array.
    
    Parameters:
    
    s - Short value.
    
    bytes - Array of bytes.
    
    off - Offset in bytes array.
    
    Returns:
    
    Number of bytes overwritten in bytes array.
  - uuidToBytes
```
public static int uuidToBytes(@Nullable
                              @Nullable UUID uuid,
                              byte[] arr,
                              int off)
```
    Encodes UUID into a sequence of bytes using the ByteBuffer, storing the result into a new byte array.
    
    Parameters:
    
    uuid - Unique identifier.
    
    arr - Byte array to fill with result.
    
    off - Offset in arr.
    
    Returns:
    
    Number of bytes overwritten in bytes array.
  - uuidToBytes
```
public static byte[] uuidToBytes(@Nullable
                                 @Nullable UUID uuid)
```
    Converts an UUID to byte array.
    
    Parameters:
    
    uuid - UUID value.
    
    Returns:
    
    Encoded into byte array UUID.
  - bytesToShort
```
public static short bytesToShort(byte[] bytes,
                                 int off)
```
    Constructs short from byte array.
    
    Parameters:
    
    bytes - Array of bytes.
    
    off - Offset in bytes array.
    
    Returns:
    
    Short value.
  - bytesToInt
```
public static int bytesToInt(byte[] bytes,
                             int off)
```
    Constructs int from byte array.
    
    Parameters:
    
    bytes - Array of bytes.
    
    off - Offset in bytes array.
    
    Returns:
    
    Integer value.
  - bytesToLong
```
public static long bytesToLong(byte[] bytes,
                               int off)
```
    Constructs long from byte array.
    
    Parameters:
    
    bytes - Array of bytes.
    
    off - Offset in bytes array.
    
    Returns:
    
    Long value.
  - bytesToUuid
```
public static UUID bytesToUuid(byte[] bytes,
                               int off)
```
    Reads an UUID form byte array. If given array contains all 0s then null will be returned.
    
    Parameters:
    
    bytes - array of bytes.
    
    off - Offset in bytes array.
    
    Returns:
    
    UUID value or null.
  - bytesToDouble
```
public static double bytesToDouble(byte[] bytes,
                                   int off)
```
    Constructs double from byte array.
    
    Parameters:
    
    bytes - Byte array.
    
    off - Offset in bytes array.
    
    Returns:
    
    Double value.
  - bytesToFloat
```
public static float bytesToFloat(byte[] bytes,
                                 int off)
```
    Constructs float from byte array.
    
    Parameters:
    
    bytes - Byte array.
    
    off - Offset in bytes array.
    
    Returns:
    
    Float value.
  - bytesEqual
```
public static boolean bytesEqual(byte[] a,
                                 int aOff,
                                 byte[] b,
                                 int bOff,
                                 int len)
```
    Compares fragments of byte arrays.
    
    Parameters:
    
    a - First array.
    
    aOff - First array offset.
    
    b - Second array.
    
    bOff - Second array offset.
    
    len - Length of fragments.
    
    Returns:
    
    true if fragments are equal, false otherwise.
  - decodeHex
```
public static byte[] decodeHex(char[] data)
                        throws IgniteCheckedException
```
    Converts an array of characters representing hexidecimal values into an array of bytes of those same values. The returned array will be half the length of the passed array, as it takes two characters to represent any given byte. An exception is thrown if the passed char array has an odd number of elements.
    
    Parameters:
    
    data - An array of characters containing hexidecimal digits
    
    Returns:
    
    A byte array containing binary data decoded from the supplied char array.
    
    Throws:
    
    IgniteCheckedException - Thrown if an odd number or illegal of characters is supplied.
  - readableSize
```
public static String readableSize(long bytes,
                                  boolean si)
```
    Parameters:
    
    bytes - Number of bytes to display.
    
    si - If true, then unit base is 1000, otherwise unit base is 1024.
    
    Returns:
    
    Formatted size.
  - fixedLengthNumberName
```
public static String fixedLengthNumberName(long num,
                                           @Nullable
                                           @Nullable String ext)
```
    Generates file name from index.
    
    Parameters:
    
    num - Number to generate file name.
    
    ext - Optional extension
    
    Returns:
    
    File name.
  - fixedLengthFileNumber
```
public static long fixedLengthFileNumber(String fileName)
```
    Parameters:
    
    fileName - File name.
    
    Returns:
    
    Number of this file.
  - fixedLengthNumberNamePattern
```
public static Pattern fixedLengthNumberNamePattern(@Nullable
                                                   @Nullable String ext)
```
    Parameters:
    
    ext - Optional extension.
    
    Returns:
    
    Pattern to match numbered file name with the specific extension.
  - dash
```
public static String dash(int len)
```
    Makes a '+---+' dash line.
    
    Parameters:
    
    len - Length of the dash line to make.
    
    Returns:
    
    Dash line.
  - pad
```
public static String pad(int len)
```
    Creates space filled string of given length.
    
    Parameters:
    
    len - Number of spaces.
    
    Returns:
    
    Space filled string of given length.
  - format
```
public static String format(long sysTime)
```
    Formats system time in milliseconds for printing in logs.
    
    Parameters:
    
    sysTime - System time.
    
    Returns:
    
    Formatted time string.
  - asIterable
```
public static <T> Iterable<T> asIterable(Enumeration<T> e)
```
    Converts enumeration to iterable so it can be used in foreach construct.
    
    Type Parameters:
    
    T - Types of instances for iteration.
    
    Parameters:
    
    e - Enumeration to convert.
    
    Returns:
    
    Iterable over the given enumeration.
  - copy
```
public static void copy(File src,
                        File dest,
                        boolean overwrite)
                 throws IOException
```
    Copy source file (or folder) to destination file (or folder). Supported source & destination:
    
    File to File
    
    File to Folder
    
    Folder to Folder (Copy the content of the directory and not the directory itself)
    Parameters:
    
    src - Source file or folder.
    
    dest - Destination file or folder.
    
    overwrite - Whether or not overwrite existing files and folders.
    
    Throws:
    
    IOException - Thrown if an I/O error occurs.
  - onGridStart
```
public static void onGridStart()
```
    Starts clock timer if grid is first.
  - onGridStop
```
public static void onGridStop()
                       throws InterruptedException
```
    Stops clock timer if all nodes into JVM were stopped.
    
    Throws:
    
    InterruptedException - If interrupted.
  - copy
```
public static int copy(InputStream in,
                       OutputStream out)
                throws IOException
```
    Copies input byte stream to output byte stream.
    
    Parameters:
    
    in - Input byte stream.
    
    out - Output byte stream.
    
    Returns:
    
    Number of the copied bytes.
    
    Throws:
    
    IOException - Thrown if an I/O error occurs.
  - copy
```
public static int copy(Reader in,
                       Writer out)
                throws IOException
```
    Copies input character stream to output character stream.
    
    Parameters:
    
    in - Input character stream.
    
    out - Output character stream.
    
    Returns:
    
    Number of the copied characters.
    
    Throws:
    
    IOException - Thrown if an I/O error occurs.
  - writeStringToFile
```
public static void writeStringToFile(File file,
                                     String s)
                              throws IOException
```
    Writes string to file.
    
    Parameters:
    
    file - File.
    
    s - String to write.
    
    Throws:
    
    IOException - Thrown if an I/O error occurs.
  - writeStringToFile
```
public static void writeStringToFile(File file,
                                     String s,
                                     String charset)
                              throws IOException
```
    Writes string to file.
    
    Parameters:
    
    file - File.
    
    s - String to write.
    
    charset - Encoding.
    
    Throws:
    
    IOException - Thrown if an I/O error occurs.
  - readFileToString
```
public static String readFileToString(String fileName,
                                      String charset)
                               throws IOException
```
    Reads file to string using specified charset.
    
    Parameters:
    
    fileName - File name.
    
    charset - File charset.
    
    Returns:
    
    File content.
    
    Throws:
    
    IOException - If error occurred.
  - writeStringToFile
```
public static void writeStringToFile(File file,
                                     String s,
                                     String charset,
                                     boolean append)
                              throws IOException
```
    Writes string to file.
    
    Parameters:
    
    file - File.
    
    s - String to write.
    
    charset - Encoding.
    
    append - If true, then specified string will be added to the end of the file.
    
    Throws:
    
    IOException - Thrown if an I/O error occurs.
  - withCause
```
public static <E extends Throwable> E withCause(E e,
                                                @Nullable
                                                @Nullable Throwable cause)
```
    Utility method that sets cause into exception and returns it.
    
    Type Parameters:
    
    E - Type of the exception.
    
    Parameters:
    
    e - Exception to set cause to and return.
    
    cause - Optional cause to set (if not null).
    
    Returns:
    
    Passed in exception with optionally set cause.
  - delete
```
public static boolean delete(@Nullable
                             @Nullable File file)
```
    Deletes file or directory with all sub-directories and files. Not thread-safe.
    
    Parameters:
    
    file - File or directory to delete.
    
    Returns:
    
    true if and only if the file or directory is successfully deleted, false otherwise
  - sizeInMegabytes
```
public static int sizeInMegabytes(long sizeInBytes)
```
    Converts size in bytes to human-readable size in megabytes.
    
    Parameters:
    
    sizeInBytes - Size of any object (file, memory region etc) in bytes.
    
    Returns:
    
    Size converted to megabytes.
  - delete
```
public static boolean delete(Path path)
```
    Deletes file or directory with all sub-directories and files. Not thread-safe.
    
    Parameters:
    
    path - File or directory to delete.
    
    Returns:
    
    true if and only if the file or directory is successfully deleted, false otherwise
  - mkdirs
```
public static boolean mkdirs(File dir)
```
    Parameters:
    
    dir - Directory to create along with all non-existent parent directories.
    
    Returns:
    
    True if directory exists (has been created or already existed), false if has not been created and does not exist.
  - getIgniteHome
```
@Nullable
public static @Nullable String getIgniteHome()
```
    Retrieves IGNITE_HOME property. The property is retrieved from system properties or from environment in that order.
    
    Returns:
    
    IGNITE_HOME property.
  - setIgniteHome
```
public static void setIgniteHome(@Nullable
                                 @Nullable String path)
```
    Parameters:
    
    path - Ignite home. May be null.
  - resolveIgnitePath
```
@Nullable
public static @Nullable File resolveIgnitePath(String path)
```
    Gets file associated with path.
    First check if path is relative to IGNITE_HOME. If not, check if path is absolute. If all checks fail, then null is returned.
    See getIgniteHome() for information on how IGNITE_HOME is retrieved.
    
    Parameters:
    
    path - Path to resolve.
    
    Returns:
    
    Resolved path as file, or null if path cannot be resolved.
  - resolveIgniteUrl
```
@Nullable
public static @Nullable URL resolveIgniteUrl(String path)
```
    Gets URL representing the path passed in. First the check is made if path is absolute. If not, then the check is made if path is relative to META-INF folder in classpath. If not, then the check is made if path is relative to ${IGNITE_HOME}. If all checks fail, then null is returned, otherwise URL representing path is returned.
    See getIgniteHome() for information on how IGNITE_HOME is retrieved.
    
    Parameters:
    
    path - Path to resolve.
    
    Returns:
    
    Resolved path as URL, or null if path cannot be resolved.
    
    See Also:
    
    getIgniteHome()
  - resolveSpringUrl
```
public static URL resolveSpringUrl(String springCfgPath)
                            throws IgniteCheckedException
```
    Resolve Spring configuration URL.
    
    Parameters:
    
    springCfgPath - Spring XML configuration file path or URL. This cannot be null.
    
    Returns:
    
    URL.
    
    Throws:
    
    IgniteCheckedException - If failed.
  - resolveIgniteUrl
```
@Nullable
public static @Nullable URL resolveIgniteUrl(String path,
                                             boolean metaInf)
```
    Gets URL representing the path passed in. First the check is made if path is absolute. If not, then the check is made if path is relative to META-INF folder in classpath. If not, then the check is made if path is relative to ${IGNITE_HOME}. If all checks fail, then null is returned, otherwise URL representing path is returned.
    See getIgniteHome() for information on how IGNITE_HOME is retrieved.
    
    Parameters:
    
    path - Path to resolve.
    
    metaInf - Flag to indicate whether META-INF folder should be checked or class path root.
    
    Returns:
    
    Resolved path as URL, or null if path cannot be resolved.
    
    See Also:
    
    getIgniteHome()
  - byteArray2HexString
```
public static String byteArray2HexString(byte[] arr)
```
    Converts byte array to hex string.
    
    Parameters:
    
    arr - Array of bytes.
    
    Returns:
    
    Hex string.
  - byteArray2HexString
```
public static String byteArray2HexString(byte[] arr,
                                         boolean toUpper)
```
    Converts byte array to hex string.
    
    Parameters:
    
    arr - Array of bytes.
    
    toUpper - If true returns upper cased result.
    
    Returns:
    
    Hex string.
  - containsObjectArray
```
public static boolean containsObjectArray(@Nullable
                                          @Nullable Object[] arr,
                                          Object val,
                                          @Nullable
                                          @Nullable Object... vals)
```
    Checks for containment of the value in the array. Both array cells and value may be null. Two nulls are considered equal.
    
    Parameters:
    
    arr - Array of objects.
    
    val - Value to check for containment inside of array.
    
    vals - Additional values.
    
    Returns:
    
    true if contains object, false otherwise.
  - containsIntArray
```
public static boolean containsIntArray(int[] arr,
                                       int val)
```
    Checks for containment of the value in the array.
    
    Parameters:
    
    arr - Array of objects.
    
    val - Value to check for containment inside of array.
    
    Returns:
    
    true if contains object, false otherwise.
  - containsStringArray
```
public static boolean containsStringArray(String[] arr,
                                          @Nullable
                                          @Nullable String val,
                                          boolean ignoreCase)
```
    Checks for containment of given string value in the specified array. Array's cells and string value can be null. Tow nulls are considered equal.
    
    Parameters:
    
    arr - Array of strings.
    
    val - Value to check for containment inside of array.
    
    ignoreCase - Ignoring case if true.
    
    Returns:
    
    true if contains string, false otherwise.
  - containsStringCollection
```
public static boolean containsStringCollection(Iterable<String> c,
                                               @Nullable
                                               @Nullable String val,
                                               boolean ignoreCase)
```
    Checks for containment of given string value in the specified collection. Collection elements and string value can be null. Tow nulls are considered equal.
    
    Parameters:
    
    c - Array of strings.
    
    val - Value to check for containment inside of array.
    
    ignoreCase - Ignoring case if true.
    
    Returns:
    
    true if contains string, false otherwise.
  - close
```
public static void close(@Nullable
                         @Nullable AutoCloseable rsrc,
                         @Nullable
                         @Nullable IgniteLogger log)
```
    Closes given resource logging possible checked exception.
    
    Parameters:
    
    rsrc - Resource to close. If it's null - it's no-op.
    
    log - Logger to log possible checked exception with (optional).
  - close
```
public static void close(@Nullable
                         @Nullable Socket sock,
                         @Nullable
                         @Nullable IgniteLogger log)
```
    Closes given socket logging possible checked exception.
    
    Parameters:
    
    sock - Socket to close. If it's null - it's no-op.
    
    log - Logger to log possible checked exception with (optional).
  - closeWithSuppressingException
```
public static void closeWithSuppressingException(@Nullable
                                                 @Nullable AutoCloseable rsrc,
                                                 @NotNull
                                                 @NotNull Exception e)
```
    Closes given resource suppressing possible checked exception.
    
    Parameters:
    
    rsrc - Resource to close. If it's null - it's no-op.
    
    e - Suppressor exception
  - closeQuiet
```
public static void closeQuiet(@Nullable
                              @Nullable AutoCloseable rsrc)
```
    Quietly closes given resource ignoring possible checked exception.
    
    Parameters:
    
    rsrc - Resource to close. If it's null - it's no-op.
  - close
```
public static void close(@Nullable
                         @Nullable SelectionKey rsrc,
                         @Nullable
                         @Nullable IgniteLogger log)
```
    Closes given resource logging possible checked exceptions.
    
    Parameters:
    
    rsrc - Resource to close. If it's null - it's no-op.
    
    log - Logger to log possible checked exception with (optional).
  - closeQuiet
```
public static void closeQuiet(@Nullable
                              @Nullable SelectionKey rsrc)
```
    Quietly closes given resource ignoring possible checked exceptions.
    
    Parameters:
    
    rsrc - Resource to close. If it's null - it's no-op.
  - close
```
public static void close(@Nullable
                         @Nullable DatagramSocket rsrc)
```
    Closes given resource.
    
    Parameters:
    
    rsrc - Resource to close. If it's null - it's no-op.
  - close
```
public static void close(@Nullable
                         @Nullable Selector rsrc,
                         @Nullable
                         @Nullable IgniteLogger log)
```
    Closes given resource logging possible checked exception.
    
    Parameters:
    
    rsrc - Resource to close. If it's null - it's no-op.
    
    log - Logger to log possible checked exception with (optional).
  - closeQuiet
```
public static void closeQuiet(@Nullable
                              @Nullable Selector rsrc)
```
    Quietly closes given resource ignoring possible checked exception.
    
    Parameters:
    
    rsrc - Resource to close. If it's null - it's no-op.
  - close
```
public static void close(@Nullable
                         @Nullable Context rsrc,
                         @Nullable
                         @Nullable IgniteLogger log)
```
    Closes given resource logging possible checked exception.
    
    Parameters:
    
    rsrc - Resource to close. If it's null - it's no-op.
    
    log - Logger to log possible checked exception with (optional).
  - closeQuiet
```
public static void closeQuiet(@Nullable
                              @Nullable Context rsrc)
```
    Quietly closes given resource ignoring possible checked exception.
    
    Parameters:
    
    rsrc - Resource to close. If it's null - it's no-op.
  - close
```
public static void close(@Nullable
                         @Nullable URLClassLoader clsLdr,
                         @Nullable
                         @Nullable IgniteLogger log)
```
    Closes class loader logging possible checked exception.
    
    Parameters:
    
    clsLdr - Class loader. If it's null - it's no-op.
    
    log - Logger to log possible checked exception with (optional).
  - closeQuiet
```
public static void closeQuiet(@Nullable
                              @Nullable Socket sock)
```
    Quietly closes given Socket ignoring possible checked exception.
    
    Parameters:
    
    sock - Socket to close. If it's null - it's no-op.
  - releaseQuiet
```
public static void releaseQuiet(@Nullable
                                @Nullable FileLock lock)
```
    Quietly releases file lock ignoring all possible exceptions.
    
    Parameters:
    
    lock - File lock. If it's null - it's no-op.
  - rollbackConnection
```
public static void rollbackConnection(@Nullable
                                      @Nullable Connection rsrc,
                                      @Nullable
                                      @Nullable IgniteLogger log)
```
    Rollbacks JDBC connection logging possible checked exception.
    
    Parameters:
    
    rsrc - JDBC connection to rollback. If connection is null, it's no-op.
    
    log - Logger to log possible checked exception with (optional).
  - courtesy
```
public static void courtesy(@Nullable
                            @Nullable IgniteLogger log,
                            Object msg)
```
    Depending on whether or not log is provided and quiet mode is enabled logs given messages as quiet message or normal log WARN message in org.apache.ignite.CourtesyConfigNotice category. If log is null or in QUIET mode it will add (courtesy) prefix to the message.
    
    Parameters:
    
    log - Optional logger to use when QUIET mode is not enabled.
    
    msg - Message to log.
  - courtesy
```
public static void courtesy(@Nullable
                            @Nullable IgniteLogger log,
                            Object longMsg,
                            Object shortMsg)
```
    Depending on whether or not log is provided and quiet mode is enabled logs given messages as quiet message or normal log WARN message in org.apache.ignite.CourtesyConfigNotice category. If log is null or in QUIET mode it will add (courtesy) prefix to the message.
    
    Parameters:
    
    log - Optional logger to use when QUIET mode is not enabled.
    
    longMsg - Message to log using normal logger.
    
    shortMsg - Message to log using quiet logger.
  - warn
```
public static void warn(@Nullable
                        @Nullable IgniteLogger log,
                        Object msg)
```
    Depending on whether or not log is provided and quiet mode is enabled logs given messages as quiet message or normal log WARN message. If log is null or in QUIET mode it will add (wrn) prefix to the message.
    
    Parameters:
    
    log - Optional logger to use when QUIET mode is not enabled.
    
    msg - Message to log.
  - quietAndWarn
```
public static void quietAndWarn(IgniteLogger log,
                                Object msg)
```
    Logs warning message in both verbose and quiet modes.
    
    Parameters:
    
    log - Logger to use.
    
    msg - Message to log.
  - quietAndWarn
```
public static void quietAndWarn(IgniteLogger log,
                                Object msg,
                                Object shortMsg)
```
    Logs warning message in both verbose and quiet modes.
    
    Parameters:
    
    log - Logger to use.
    
    shortMsg - Short message.
    
    msg - Message to log.
  - quietAndWarn
```
public static void quietAndWarn(IgniteLogger log,
                                Object msg,
                                @Nullable
                                @Nullable Throwable e)
```
    Logs warning message in both verbose and quiet modes.
    
    Parameters:
    
    log - Logger to use.
    
    msg - Message to log.
    
    e - Optional exception.
  - error
```
public static void error(@Nullable
                         @Nullable IgniteLogger log,
                         Object msg)
```
    Depending on whether or not log is provided and quiet mode is enabled logs given messages as quiet message or normal log ERROR message. If log is null or in QUIET mode it will add (err) prefix to the message.
    
    Parameters:
    
    log - Optional logger to use when QUIET mode is not enabled.
    
    msg - Message to log.
  - warn
```
public static void warn(@Nullable
                        @Nullable IgniteLogger log,
                        Object msg,
                        @Nullable
                        @Nullable Throwable e)
```
    Depending on whether or not log is provided and quiet mode is enabled logs given messages as quiet message or normal log WARN message. If log is null or in QUIET mode it will add (wrn) prefix to the message.
    
    Parameters:
    
    log - Optional logger to use when QUIET mode is not enabled.
    
    msg - Message to log using normal logger.
    
    e - Optional exception.
  - warnDevOnly
```
public static void warnDevOnly(@Nullable
                               @Nullable IgniteLogger log,
                               Object msg)
```
    Depending on whether or not log is provided and quiet mode is enabled logs given messages as quiet message or normal log WARN message with DEV_ONLY marker. If log is null or in QUIET mode it will add (wrn) prefix to the message. If property IGNITE_DEV_ONLY_LOGGING_DISABLED is set to true, the message will not be logged.
    
    Parameters:
    
    log - Optional logger to use when QUIET mode is not enabled.
    
    msg - Message to log.
  - log
```
public static void log(@Nullable
                       @Nullable IgniteLogger log,
                       Object longMsg,
                       Object shortMsg)
```
    Depending on whether or not log is provided and quiet mode is enabled logs given messages as quiet message or normal log INFO message.
    NOTE: unlike the normal logging when INFO level may not be enabled and therefore no logging will happen - using this method the log will be written always either via INFO log or quiet mode.
    USE IT APPROPRIATELY.
    
    Parameters:
    
    log - Optional logger to use when QUIET mode is not enabled.
    
    longMsg - Message to log using normal logger.
    
    shortMsg - Message to log using quiet logger.
  - initWorkDir
```
public static void initWorkDir(IgniteConfiguration cfg)
                        throws IgniteCheckedException
```
    Resolves work directory.
    
    Parameters:
    
    cfg - Ignite configuration.
    
    Throws:
    
    IgniteCheckedException
  - initLogger
```
public static IgniteLogger initLogger(IgniteConfiguration cfg,
                                      String app)
                               throws IgniteCheckedException
```
    Parameters:
    
    cfg - Ignite configuration.
    
    app - Application name.
    
    Returns:
    
    Initialized logger.
    
    Throws:
    
    IgniteCheckedException - If failed.
  - initLogger
```
public static IgniteLogger initLogger(@Nullable
                                      @Nullable IgniteLogger cfgLog,
                                      @Nullable
                                      @Nullable String app,
                                      @Nullable
                                      @Nullable UUID nodeId,
                                      String workDir)
                               throws IgniteCheckedException
```
    Parameters:
    
    cfgLog - Configured logger.
    
    app - Application name.
    
    workDir - Work directory.
    
    Returns:
    
    Initialized logger.
    
    Throws:
    
    IgniteCheckedException - If failed.
  - log
```
public static void log(@Nullable
                       @Nullable IgniteLogger log,
                       Object msg)
```
    Depending on whether or not log is provided and quiet mode is enabled logs given messages as quiet message or normal log INF0 message.
    NOTE: unlike the normal logging when INFO level may not be enabled and therefore no logging will happen - using this method the log will be written always either via INFO log or quiet mode.
    USE IT APPROPRIATELY.
    
    Parameters:
    
    log - Optional logger to use when QUIET mode is not enabled.
    
    msg - Message to log.
  - error
```
public static void error(@Nullable
                         @Nullable IgniteLogger log,
                         Object longMsg,
                         Object shortMsg,
                         @Nullable
                         @Nullable Throwable e)
```
    Depending on whether or not log is provided and quiet mode is enabled logs given messages as quiet message or normal log ERROR message. If log is null or in QUIET mode it will add (err) prefix to the message.
    
    Parameters:
    
    log - Optional logger to use when QUIET mode is not enabled.
    
    longMsg - Message to log using normal logger.
    
    shortMsg - Message to log using quiet logger.
    
    e - Optional exception.
  - error
```
public static void error(@Nullable
                         @Nullable IgniteLogger log,
                         Object shortMsg,
                         @Nullable
                         @Nullable Throwable e)
```
    Shortcut for error(org.apache.ignite.IgniteLogger, Object, Object, Throwable).
    
    Parameters:
    
    log - Optional logger.
    
    shortMsg - Message to log using quiet logger.
    
    e - Optional exception.
  - quiet
```
public static void quiet(boolean err,
                         Object... objs)
```
    Parameters:
    
    err - Whether to print to System.err.
    
    objs - Objects to log in quiet mode.
  - quietMultipleLines
```
public static void quietMultipleLines(boolean err,
                                      String multiline)
```
    Parameters:
    
    err - Whether to print to System.err.
    
    multiline - Multiple lines string to print.
  - quietAndInfo
```
public static void quietAndInfo(IgniteLogger log,
                                String msg)
```
    Prints out the message in quiet and info modes.
    
    Parameters:
    
    log - Logger.
    
    msg - Message to print.
  - rollbackConnectionQuiet
```
public static void rollbackConnectionQuiet(@Nullable
                                           @Nullable Connection rsrc)
```
    Quietly rollbacks JDBC connection ignoring possible checked exception.
    
    Parameters:
    
    rsrc - JDBC connection to rollback. If connection is null, it's no-op.
  - makeMBeanName
```
public static ObjectName makeMBeanName(@Nullable
                                       @Nullable String igniteInstanceName,
                                       @Nullable
                                       @Nullable String grp,
                                       String name)
                                throws MalformedObjectNameException
```
    Constructs JMX object name with given properties. Map with ordered groups used for proper object name construction.
    
    Parameters:
    
    igniteInstanceName - Ignite instance name.
    
    grp - Name of the group.
    
    name - Name of mbean.
    
    Returns:
    
    JMX object name.
    
    Throws:
    
    MalformedObjectNameException - Thrown in case of any errors.
  - makeMBeanName
```
public static ObjectName makeMBeanName(@Nullable
                                       @Nullable String igniteInstanceName,
                                       @Nullable
                                       @Nullable String grp,
                                       List<String> grps,
                                       String name)
                                throws MalformedObjectNameException
```
    Constructs JMX object name with given properties. Map with ordered groups used for proper object name construction.
    
    Parameters:
    
    igniteInstanceName - Ignite instance name.
    
    grp - Name of the group.
    
    grps - Names of extended groups.
    
    name - Name of mbean.
    
    Returns:
    
    JMX object name.
    
    Throws:
    
    MalformedObjectNameException - Thrown in case of any errors.
  - maskName
```
public static String maskName(@Nullable
                              @Nullable String name)
```
    Mask component name to make sure that it is not null.
    
    Parameters:
    
    name - Component name to mask, possibly null.
    
    Returns:
    
    Component name.
  - alphanumericUnderscore
```
public static boolean alphanumericUnderscore(String s)
```
    Parameters:
    
    s - String to check.
    
    Returns:
    
    true if given string contains only alphanumeric and underscore symbols.
  - registerMBean
```
public static <T> ObjectName registerMBean(MBeanServer mbeanSrv,
                                           @Nullable
                                           @Nullable String igniteInstanceName,
                                           @Nullable
                                           @Nullable String grp,
                                           String name,
                                           T impl,
                                           @Nullable
                                           @Nullable Class<T> itf)
                                    throws JMException
```
    Registers MBean with the server.
    
    Type Parameters:
    
    T - Type of mbean.
    
    Parameters:
    
    mbeanSrv - MBean server.
    
    igniteInstanceName - Ignite instance name.
    
    grp - Name of the group.
    
    name - Name of mbean.
    
    impl - MBean implementation.
    
    itf - MBean interface.
    
    Returns:
    
    JMX object name.
    
    Throws:
    
    MBeanRegistrationException - if MBeans are disabled.
    
    JMException - If MBean creation failed.
  - registerMBean
```
public static <T> ObjectName registerMBean(MBeanServer mbeanSrv,
                                           ObjectName name,
                                           T impl,
                                           Class<T> itf)
                                    throws JMException
```
    Registers MBean with the server.
    
    Type Parameters:
    
    T - Type of mbean.
    
    Parameters:
    
    mbeanSrv - MBean server.
    
    name - MBean object name.
    
    impl - MBean implementation.
    
    itf - MBean interface.
    
    Returns:
    
    JMX object name.
    
    Throws:
    
    MBeanRegistrationException - if MBeans are disabled.
    
    JMException - If MBean creation failed.
    
    IgniteException - If MBean creation are not allowed.
  - interrupt
```
public static void interrupt(@Nullable
                             @Nullable Thread t)
```
    Convenience method that interrupts a given thread if it's not null.
    
    Parameters:
    
    t - Thread to interrupt.
  - interrupt
```
public static void interrupt(Iterable<? extends Thread> workers)
```
    Convenience method that interrupts a given thread if it's not null.
    
    Parameters:
    
    workers - Threads to interrupt.
  - join
```
public static boolean join(@Nullable
                           @Nullable Thread t,
                           @Nullable
                           @Nullable IgniteLogger log)
```
    Waits for completion of a given thread. If thread is null then this method returns immediately returning true
    
    Parameters:
    
    t - Thread to join.
    
    log - Logger for logging errors.
    
    Returns:
    
    true if thread has finished, false otherwise.
  - join
```
public static boolean join(@Nullable
                           @Nullable Thread t,
                           @Nullable
                           @Nullable IgniteLogger log,
                           long timeout)
```
    Waits for completion of a given thread. If thread is null then this method returns immediately returning true
    
    Parameters:
    
    t - Thread to join.
    
    log - Logger for logging errors.
    
    timeout - Join timeout.
    
    Returns:
    
    true if thread has finished, false otherwise.
  - joinThreads
```
public static boolean joinThreads(Iterable<? extends Thread> workers,
                                  @Nullable
                                  @Nullable IgniteLogger log)
```
    Waits for completion of a given threads. If thread is null then this method returns immediately returning true
    
    Parameters:
    
    workers - Thread to join.
    
    log - Logger for logging errors.
    
    Returns:
    
    true if thread has finished, false otherwise.
  - startThreads
```
public static void startThreads(Iterable<? extends Thread> threads)
```
    Starts given threads.
    
    Parameters:
    
    threads - Threads to start.
  - cancel
```
public static void cancel(@Nullable
                          @Nullable GridWorker w)
```
    Cancels given runnable.
    
    Parameters:
    
    w - Worker to cancel - it's no-op if runnable is null.
  - cancel
```
public static void cancel(Iterable<? extends GridWorker> ws)
```
    Cancels collection of runnables.
    
    Parameters:
    
    ws - Collection of workers - it's no-op if collection is null.
  - join
```
public static boolean join(@Nullable
                           @Nullable GridWorker w,
                           @Nullable
                           @Nullable IgniteLogger log)
```
    Joins runnable.
    
    Parameters:
    
    w - Worker to join.
    
    log - The logger to possible exception.
    
    Returns:
    
    true if worker has not been interrupted, false if it was interrupted.
  - join
```
public static boolean join(Iterable<? extends GridWorker> ws,
                           IgniteLogger log)
```
    Joins given collection of runnables.
    
    Parameters:
    
    ws - Collection of workers to join.
    
    log - The logger to possible exceptions.
    
    Returns:
    
    true if none of the worker have been interrupted, false if at least one was interrupted.
  - shutdownNow
```
public static void shutdownNow(Class<?> owner,
                               @Nullable
                               @Nullable ExecutorService exec,
                               @Nullable
                               @Nullable IgniteLogger log)
```
    Shutdowns given ExecutorService and wait for executor service to stop.
    
    Parameters:
    
    owner - The ExecutorService owner.
    
    exec - ExecutorService to shutdown.
    
    log - The logger to possible exceptions and warnings.
  - emptyTopologyException
```
public static ClusterGroupEmptyCheckedException emptyTopologyException()
```
    Creates appropriate empty projection exception.
    
    Returns:
    
    Empty projection exception.
  - writeUuids
```
public static void writeUuids(DataOutput out,
                              @Nullable
                              @Nullable Collection<UUID> col)
                       throws IOException
```
    Writes UUIDs to output stream. This method is meant to be used by implementations of Externalizable interface.
    
    Parameters:
    
    out - Output stream.
    
    col - UUIDs to write.
    
    Throws:
    
    IOException - If write failed.
  - readUuids
```
@Nullable
public static @Nullable List<UUID> readUuids(DataInput in)
                                      throws IOException
```
    Reads UUIDs from input stream. This method is meant to be used by implementations of Externalizable interface.
    
    Parameters:
    
    in - Input stream.
    
    Returns:
    
    Read UUIDs.
    
    Throws:
    
    IOException - If read failed.
  - writeIgniteUuids
```
public static void writeIgniteUuids(DataOutput out,
                                    @Nullable
                                    @Nullable Collection<IgniteUuid> col)
                             throws IOException
```
    Writes Ignite UUIDs to output stream. This method is meant to be used by implementations of Externalizable interface.
    
    Parameters:
    
    out - Output stream.
    
    col - Ignite UUIDs to write.
    
    Throws:
    
    IOException - If write failed.
  - readIgniteUuids
```
@Nullable
public static @Nullable List<IgniteUuid> readIgniteUuids(DataInput in)
                                                  throws IOException
```
    Reads Ignite UUIDs from input stream. This method is meant to be used by implementations of Externalizable interface.
    
    Parameters:
    
    in - Input stream.
    
    Returns:
    
    Read Ignite UUIDs.
    
    Throws:
    
    IOException - If read failed.
  - writeUuid
```
public static void writeUuid(DataOutput out,
                             UUID uid)
                      throws IOException
```
    Writes UUID to output stream. This method is meant to be used by implementations of Externalizable interface.
    
    Parameters:
    
    out - Output stream.
    
    uid - UUID to write.
    
    Throws:
    
    IOException - If write failed.
  - readUuid
```
@Nullable
public static @Nullable UUID readUuid(DataInput in)
                               throws IOException
```
    Reads UUID from input stream. This method is meant to be used by implementations of Externalizable interface.
    
    Parameters:
    
    in - Input stream.
    
    Returns:
    
    Read UUID.
    
    Throws:
    
    IOException - If read failed.
  - writeUuid
```
public static void writeUuid(BinaryRawWriter out,
                             UUID uid)
```
    Writes UUID to binary writer.
    
    Parameters:
    
    out - Output Binary writer.
    
    uid - UUID to write.
    
    Throws:
    
    IOException - If write failed.
  - readUuid
```
@Nullable
public static @Nullable UUID readUuid(BinaryRawReader in)
```
    Reads UUID from binary reader.
    
    Parameters:
    
    in - Binary reader.
    
    Returns:
    
    Read UUID.
    
    Throws:
    
    IOException - If read failed.
  - writeIgniteUuid
```
public static void writeIgniteUuid(DataOutput out,
                                   IgniteUuid uid)
                            throws IOException
```
    Writes IgniteUuid to output stream. This method is meant to be used by implementations of Externalizable interface.
    
    Parameters:
    
    out - Output stream.
    
    uid - UUID to write.
    
    Throws:
    
    IOException - If write failed.
  - readIgniteUuid
```
@Nullable
public static @Nullable IgniteUuid readIgniteUuid(DataInput in)
                                           throws IOException
```
    Reads IgniteUuid from input stream. This method is meant to be used by implementations of Externalizable interface.
    
    Parameters:
    
    in - Input stream.
    
    Returns:
    
    Read UUID.
    
    Throws:
    
    IOException - If read failed.
  - igniteUuidToBytes
```
public static byte[] igniteUuidToBytes(IgniteUuid uuid)
```
    Converts IgniteUuid to bytes.
    
    Parameters:
    
    uuid - IgniteUuid to convert.
    
    Returns:
    
    Bytes.
  - igniteUuidToBytes
```
public static void igniteUuidToBytes(IgniteUuid uuid,
                                     byte[] out,
                                     int off)
```
    Converts IgniteUuid to bytes.
    
    Parameters:
    
    uuid - IgniteUuid to convert.
    
    out - Output array to write to.
    
    off - Offset from which to write.
  - bytesToIgniteUuid
```
public static IgniteUuid bytesToIgniteUuid(byte[] in,
                                           int off)
```
    Converts bytes to IgniteUuid.
    
    Parameters:
    
    in - Input byte array.
    
    off - Offset from which start reading.
    
    Returns:
    
    IgniteUuid instance.
  - writeBooleanArray
```
public static void writeBooleanArray(DataOutput out,
                                     @Nullable
                                     @org.jetbrains.annotations.Nullable boolean[] arr)
                              throws IOException
```
    Writes boolean array to output stream accounting for null values.
    
    Parameters:
    
    out - Output stream to write to.
    
    arr - Array to write, possibly null.
    
    Throws:
    
    IOException - If write failed.
  - writeIntArray
```
public static void writeIntArray(DataOutput out,
                                 @Nullable
                                 @org.jetbrains.annotations.Nullable int[] arr)
                          throws IOException
```
    Writes int array to output stream accounting for null values.
    
    Parameters:
    
    out - Output stream to write to.
    
    arr - Array to write, possibly null.
    
    Throws:
    
    IOException - If write failed.
  - writeLongArray
```
public static void writeLongArray(DataOutput out,
                                  @Nullable
                                  @org.jetbrains.annotations.Nullable long[] arr)
                           throws IOException
```
    Writes long array to output stream.
    
    Parameters:
    
    out - Output stream to write to.
    
    arr - Array to write.
    
    Throws:
    
    IOException - If write failed.
  - readBooleanArray
```
@Nullable
public static @org.jetbrains.annotations.Nullable boolean[] readBooleanArray(DataInput in)
                                                                      throws IOException
```
    Reads boolean array from input stream accounting for null values.
    
    Parameters:
    
    in - Stream to read from.
    
    Returns:
    
    Read byte array, possibly null.
    
    Throws:
    
    IOException - If read failed.
  - readIntArray
```
@Nullable
public static @org.jetbrains.annotations.Nullable int[] readIntArray(DataInput in)
                                                              throws IOException
```
    Reads int array from input stream accounting for null values.
    
    Parameters:
    
    in - Stream to read from.
    
    Returns:
    
    Read byte array, possibly null.
    
    Throws:
    
    IOException - If read failed.
  - readLongArray
```
@Nullable
public static @org.jetbrains.annotations.Nullable long[] readLongArray(DataInput in)
                                                                throws IOException
```
    Reads long array from input stream.
    
    Parameters:
    
    in - Stream to read from.
    
    Returns:
    
    Read long array, possibly null.
    
    Throws:
    
    IOException - If read failed.
  - hashCode
```
public static int hashCode(ByteBuffer... bufs)
```
    Calculates hash code for the given byte buffers contents. Compatible with Arrays.hashCode(byte[]) with the same content. Does not change buffers positions.
    
    Parameters:
    
    bufs - Byte buffers.
    
    Returns:
    
    Hash code.
  - writeMap
```
public static void writeMap(ObjectOutput out,
                            Map<?,?> map)
                     throws IOException
```
    Parameters:
    
    out - Output.
    
    map - Map to write.
    
    Throws:
    
    IOException - If write failed.
  - readMap
```
@Nullable
public static <K,V> @Nullable Map<K,V> readMap(ObjectInput in)
                                                    throws IOException,
                                                           ClassNotFoundException
```
    Parameters:
    
    in - Input.
    
    Returns:
    
    Read map.
    
    Throws:
    
    IOException - If de-serialization failed.
    
    ClassNotFoundException - If deserialized class could not be found.
  - hashCode
```
public static int hashCode(Object obj)
```
    Calculate a hashCode for an array.
    
    Parameters:
    
    obj - Object.
  - readTreeMap
```
@Nullable
public static <K,V> @Nullable TreeMap<K,V> readTreeMap(ObjectInput in)
                                                            throws IOException,
                                                                   ClassNotFoundException
```
    Parameters:
    
    in - Input.
    
    Returns:
    
    Read map.
    
    Throws:
    
    IOException - If de-serialization failed.
    
    ClassNotFoundException - If deserialized class could not be found.
  - readHashMap
```
@Nullable
public static <K,V> @Nullable HashMap<K,V> readHashMap(ObjectInput in)
                                                            throws IOException,
                                                                   ClassNotFoundException
```
    Read hash map.
    
    Parameters:
    
    in - Input.
    
    Returns:
    
    Read map.
    
    Throws:
    
    IOException - If de-serialization failed.
    
    ClassNotFoundException - If deserialized class could not be found.
  - readLinkedMap
```
@Nullable
public static <K,V> @Nullable LinkedHashMap<K,V> readLinkedMap(ObjectInput in)
                                                                    throws IOException,
                                                                           ClassNotFoundException
```
    Parameters:
    
    in - Input.
    
    Returns:
    
    Read map.
    
    Throws:
    
    IOException - If de-serialization failed.
    
    ClassNotFoundException - If deserialized class could not be found.
  - writeIntKeyMap
```
public static void writeIntKeyMap(ObjectOutput out,
                                  Map<Integer,?> map)
                           throws IOException
```
    Parameters:
    
    out - Output.
    
    map - Map to write.
    
    Throws:
    
    IOException - If write failed.
  - readIntKeyMap
```
@Nullable
public static <V> @Nullable Map<Integer,V> readIntKeyMap(ObjectInput in)
                                                        throws IOException,
                                                               ClassNotFoundException
```
    Parameters:
    
    in - Input.
    
    Returns:
    
    Read map.
    
    Throws:
    
    IOException - If de-serialization failed.
    
    ClassNotFoundException - If deserialized class could not be found.
  - writeIntKeyIntValueMap
```
public static void writeIntKeyIntValueMap(DataOutput out,
                                          Map<Integer,Integer> map)
                                   throws IOException
```
    Parameters:
    
    out - Output.
    
    map - Map to write.
    
    Throws:
    
    IOException - If write failed.
  - readIntKeyIntValueMap
```
@Nullable
public static @Nullable Map<Integer,Integer> readIntKeyIntValueMap(DataInput in)
                                                                  throws IOException
```
    Parameters:
    
    in - Input.
    
    Returns:
    
    Read map.
    
    Throws:
    
    IOException - If de-serialization failed.
  - readList
```
@Nullable
public static <E> @Nullable List<E> readList(ObjectInput in)
                                      throws IOException,
                                             ClassNotFoundException
```
    Parameters:
    
    in - Input.
    
    Returns:
    
    Deserialized list.
    
    Throws:
    
    IOException - If deserialization failed.
    
    ClassNotFoundException - If deserialized class could not be found.
  - readIntList
```
@Nullable
public static @Nullable List<Integer> readIntList(DataInput in)
                                           throws IOException
```
    Parameters:
    
    in - Input.
    
    Returns:
    
    Deserialized list.
    
    Throws:
    
    IOException - If deserialization failed.
  - readSet
```
@Nullable
public static <E> @Nullable Set<E> readSet(ObjectInput in)
                                    throws IOException,
                                           ClassNotFoundException
```
    Parameters:
    
    in - Input.
    
    Returns:
    
    Deserialized set.
    
    Throws:
    
    IOException - If deserialization failed.
    
    ClassNotFoundException - If deserialized class could not be found.
  - readIntSet
```
@Nullable
public static @Nullable Set<Integer> readIntSet(DataInput in)
                                         throws IOException
```
    Parameters:
    
    in - Input.
    
    Returns:
    
    Deserialized set.
    
    Throws:
    
    IOException - If deserialization failed.
  - writeString
```
public static void writeString(DataOutput out,
                               String s)
                        throws IOException
```
    Writes string to output stream accounting for null values.
    Limitation for max string lenght of UTF_BYTE_LIMIT bytes is caused by ObjectOutputStream.writeUTF(java.lang.String) used under the hood to perform an actual write.
    
    If longer string is passes a UTFDataFormatException exception will be thrown.
    
    To write longer strings use one of two options:
    
    writeLongString(DataOutput, String) writes string as is converting it into binary array of UTF-8 encoded characters. To read the value back readLongString(DataInput) should be used.
    
    writeCutString(DataOutput, String) cuts passed string to UTF_BYTE_LIMIT bytes and then writes them without converting to byte array. No exceptions will be thrown for string of any length; written string can be read back with regular readString(DataInput) method.
    Parameters:
    
    out - Output stream to write to.
    
    s - String to write, possibly null.
    
    Throws:
    
    IOException - If write failed.
  - readString
```
@Nullable
public static @Nullable String readString(DataInput in)
                                   throws IOException
```
    Reads string from input stream accounting for null values. Method enables to read strings shorter than UTF_BYTE_LIMIT bytes in UTF-8 otherwise an exception will be thrown. Strings written by writeString(DataOutput, String) or writeCutString(DataOutput, String) can be read by this method.
    
    Parameters:
    
    in - Stream to read from.
    
    Returns:
    
    Read string, possibly null.
    
    Throws:
    
    IOException - If read failed.
    
    See Also:
    
    for more information about writing strings.
  - writeEnum
```
public static <E extends Enum<E>> void writeEnum(DataOutput out,
                                                 E e)
                                          throws IOException
```
    Writes enum to output stream accounting for null values. Note: method writes only one byte for every enum. Therefore, this method only for Enums with maximum count of values equals to 128.
    
    Parameters:
    
    out - Output stream to write to.
    
    e - Enum value to write, possibly null.
    
    Throws:
    
    IOException - If write failed.
  - readEnum
```
public static <E extends Enum<E>> E readEnum(DataInput in,
                                             Class<E> enumCls)
                                      throws IOException
```
    Throws:
    
    IOException
  - getByIndex
```
public static <T> T getByIndex(Collection<T> vals,
                               int idx)
```
    Gets collection value by index.
    
    Type Parameters:
    
    T - Type of collection values.
    
    Parameters:
    
    vals - Collection of values.
    
    idx - Index of value in the collection.
    
    Returns:
    
    Value at the given index.
  - getAnnotation
```
@Nullable
public static <T extends Annotation> T getAnnotation(Class<?> cls,
                                                     Class<T> annCls)
```
    Gets annotation for a class.
    
    Type Parameters:
    
    T - Type of annotation to return.
    
    Parameters:
    
    cls - Class to get annotation from.
    
    annCls - Annotation to get.
    
    Returns:
    
    Instance of annotation, or null if not found.
  - getDeclaredAnnotation
```
@Nullable
public static <T extends Annotation> T getDeclaredAnnotation(Class<?> cls,
                                                             Class<T> annCls)
```
    Gets declared annotation for a class.
    
    Type Parameters:
    
    T - Type of annotation to return.
    
    Parameters:
    
    cls - Class to get annotation from.
    
    annCls - Annotation to get.
    
    Returns:
    
    Instance of annotation, or null if not found.
  - hasDeclaredAnnotation
```
public static <T extends Annotation> boolean hasDeclaredAnnotation(Class<?> cls,
                                                                   Class<T> annCls)
```
    Indicates if class has given declared annotation.
    
    Type Parameters:
    
    T - Annotation type.
    
    Parameters:
    
    cls - Class to get annotation from.
    
    annCls - Annotation to get.
    
    Returns:
    
    true if class has annotation or false otherwise.
  - hasDeclaredAnnotation
```
public static <T extends Annotation> boolean hasDeclaredAnnotation(Object o,
                                                                   Class<T> annCls)
```
    Indicates if class has given annotation.
    
    Parameters:
    
    o - Object to get annotation from.
    
    annCls - Annotation to get.
    
    Returns:
    
    true if class has annotation or false otherwise.
  - hasAnnotation
```
public static <T extends Annotation> boolean hasAnnotation(Class<?> cls,
                                                           Class<T> annCls)
```
    Indicates if class has given annotation.
    
    Type Parameters:
    
    T - Annotation type.
    
    Parameters:
    
    cls - Class to get annotation from.
    
    annCls - Annotation to get.
    
    Returns:
    
    true if class has annotation or false otherwise.
  - hasAnnotation
```
public static <T extends Annotation> boolean hasAnnotation(Object o,
                                                           Class<T> annCls)
```
    Indicates if class has given annotation.
    
    Parameters:
    
    o - Object to get annotation from.
    
    annCls - Annotation to get.
    
    Returns:
    
    true if class has annotation or false otherwise.
  - allInterfaces
```
public static Collection<Class<?>> allInterfaces(Class<?> cls)
```
    Provides all interfaces of cls including inherited ones. Excludes duplicated ones in case of multiple inheritance.
    
    Parameters:
    
    cls - Class to search for interfaces.
    
    Returns:
    
    Collection of interfaces of cls.
  - getSimpleName
```
public static String getSimpleName(Class<?> cls)
```
    Gets simple class name taking care of empty names.
    
    Parameters:
    
    cls - Class to get the name for.
    
    Returns:
    
    Simple class name.
  - containsAll
```
public static boolean containsAll(Map<?,?> base,
                                  Map<?,?> map)
```
    Checks if the map passed in is contained in base map.
    
    Parameters:
    
    base - Base map.
    
    map - Map to check.
    
    Returns:
    
    True if all entries within map are contained in base map, false otherwise.
  - getTaskName
```
public static String getTaskName(Class<? extends ComputeTask<?,?>> taskCls)
```
    Gets task name for the given task class.
    
    Parameters:
    
    taskCls - Task class.
    
    Returns:
    
    Either task name from class annotation (see ComputeTaskName}) or task class name if there is no annotation.
  - getResourceName
```
public static String getResourceName(Class rscCls)
```
    Gets resource name. Returns a task name if it is a Compute task or a class name otherwise.
    
    Parameters:
    
    rscCls - Class of resource.
    
    Returns:
    
    Name of resource.
  - spiAttribute
```
public static String spiAttribute(IgniteSpi spi,
                                  String attrName)
```
    Creates SPI attribute name by adding prefix to the attribute name. Prefix is an SPI name + '.'.
    
    Parameters:
    
    spi - SPI.
    
    attrName - attribute name.
    
    Returns:
    
    SPI attribute name.
  - classNameToResourceName
```
public static String classNameToResourceName(String clsName)
```
    Gets resource path for the class.
    
    Parameters:
    
    clsName - Class name.
    
    Returns:
    
    Resource name for the class.
  - getRuntimeMx
```
public static RuntimeMXBean getRuntimeMx()
```
    Gets runtime MBean.
    
    Returns:
    
    Runtime MBean.
  - getThreadMx
```
public static ThreadMXBean getThreadMx()
```
    Gets threading MBean.
    
    Returns:
    
    Threading MBean.
  - getOsMx
```
public static OperatingSystemMXBean getOsMx()
```
    Gets OS MBean.
    
    Returns:
    
    OS MBean.
  - getMemoryMx
```
public static MemoryMXBean getMemoryMx()
```
    Gets memory MBean.
    
    Returns:
    
    Memory MBean.
  - getTotalMemoryAvailable
```
public static long getTotalMemoryAvailable()
```
    Gets amount of RAM memory available on this machine.
    
    Returns:
    
    Total amount of memory in bytes or -1 if any exception happened.
  - getCompilerMx
```
public static CompilationMXBean getCompilerMx()
```
    Gets compilation MBean.
    
    Returns:
    
    Compilation MBean.
  - detectClass
```
public static Class<?> detectClass(Object obj)
```
    Tries to detect user class from passed in object inspecting collections, arrays or maps.
    
    Parameters:
    
    obj - Object.
    
    Returns:
    
    First non-JDK or deployment aware class or passed in object class.
  - detectClassLoader
```
public static ClassLoader detectClassLoader(Class<?> cls)
```
    Detects class loader for given class.
    This method will first check if Thread.getContextClassLoader() is appropriate. If yes, then context class loader will be returned, otherwise the Class.getClassLoader() will be returned.
    
    Parameters:
    
    cls - Class to find class loader for.
    
    Returns:
    
    Class loader for given class (never null).
  - detectObjectClassLoader
```
@Nullable
public static @Nullable ClassLoader detectObjectClassLoader(@Nullable
                                                            @Nullable Object obj)
```
    Detects class loader for given object's class.
    
    Parameters:
    
    obj - Object to find class loader for class of.
    
    Returns:
    
    Class loader for given object (possibly null).
  - isLoadableBy
```
public static boolean isLoadableBy(String clsName,
                                   @Nullable
                                   @Nullable ClassLoader ldr)
```
    Tests whether or not given class is loadable provided class loader.
    
    Parameters:
    
    clsName - Class name to test.
    
    ldr - Class loader to test with. If null - we'll use system class loader instead. If System class loader is not set - this method will return false.
    
    Returns:
    
    True if class is loadable, false otherwise.
  - peerDeployAware0
```
public static GridPeerDeployAware peerDeployAware0(@Nullable
                                                   @Nullable Iterable<?> c)
```
    Gets the peer deploy aware instance for the object with the widest class loader. If collection is null, empty or contains only nulls - the peer deploy aware object based on system class loader will be returned.
    
    Parameters:
    
    c - Collection.
    
    Returns:
    
    Peer deploy aware object from this collection with the widest class loader.
    
    Throws:
    
    IllegalArgumentException - Thrown in case when common class loader for all elements in this collection cannot be found. In such case - peer deployment is not possible.
  - peerDeployAware0
```
public static GridPeerDeployAware peerDeployAware0(@Nullable
                                                   @Nullable Object... c)
```
    Gets the peer deploy aware instance for the object with the widest class loader. If array is null, empty or contains only nulls - the peer deploy aware object based on system class loader will be returned.
    
    Parameters:
    
    c - Objects.
    
    Returns:
    
    Peer deploy aware object from this array with the widest class loader.
    
    Throws:
    
    IllegalArgumentException - Thrown in case when common class loader for all elements in this array cannot be found. In such case - peer deployment is not possible.
  - peerDeployAware0
```
public static GridPeerDeployAware peerDeployAware0(Object obj)
```
    Creates an instance of GridPeerDeployAware for object. Checks, if the object is an instance of collection or object array.
    
    Parameters:
    
    obj - Object to deploy.
    
    Returns:
    
    GridPeerDeployAware instance for given object.
  - peerDeployAware
```
public static GridPeerDeployAware peerDeployAware(Object obj)
```
    Creates an instance of GridPeerDeployAware for object.
    
    Parameters:
    
    obj - Object to deploy.
    
    Returns:
    
    GridPeerDeployAware instance for given object.
  - detectPeerDeployAware
```
public static GridPeerDeployAware detectPeerDeployAware(GridPeerDeployAware obj)
```
    Unwraps top level user class for wrapped objects.
    
    Parameters:
    
    obj - Object to check.
    
    Returns:
    
    Top level user class.
  - isIgnite
```
public static boolean isIgnite(Class<?> cls)
```
    Checks if given class is of Ignite type.
    
    Parameters:
    
    cls - Class to check.
    
    Returns:
    
    True if given class is of Ignite type.
  - isGrid
```
public static boolean isGrid(Class<?> cls)
```
    Checks if given class is of Grid type.
    
    Parameters:
    
    cls - Class to check.
    
    Returns:
    
    True if given class is of Grid type.
  - compact
```
public static String compact(String s)
```
    Replaces all occurrences of org.apache.ignite. with o.a.i., org.apache.ignite.internal. with o.a.i.i., org.apache.ignite.internal.visor. with o.a.i.i.v. and
    
    Parameters:
    
    s - String to replace in.
    
    Returns:
    
    Replaces string.
  - isJdk
```
public static boolean isJdk(Class<?> cls)
```
    Check if given class is of JDK type.
    
    Parameters:
    
    cls - Class to check.
    
    Returns:
    
    True if object is JDK type.
  - isEnum
```
public static boolean isEnum(Class cls)
```
    Check if given class represents a Enum.
    
    Parameters:
    
    cls - Class to check.
    
    Returns:
    
    True if this is a Enum class.
  - wait
```
public static void wait(Object mux)
                 throws IgniteInterruptedCheckedException
```
    Converts InterruptedException to IgniteCheckedException.
    
    Parameters:
    
    mux - Mux to wait on.
    
    Throws:
    
    IgniteInterruptedCheckedException - If interrupted.
  - unzip
```
public static void unzip(File zipFile,
                         File toDir,
                         @Nullable
                         @Nullable IgniteLogger log)
                  throws IOException
```
    Unzip file to folder.
    
    Parameters:
    
    zipFile - ZIP file.
    
    toDir - Directory to unzip file content.
    
    log - Grid logger.
    
    Throws:
    
    IOException - In case of error.
  - assertionsEnabled
```
public static boolean assertionsEnabled()
```
    Returns:
    
    True if assertions enabled.
  - osJdkString
```
public static String osJdkString()
```
    Gets OS JDK string.
    
    Returns:
    
    OS JDK string.
  - osString
```
public static String osString()
```
    Gets OS string.
    
    Returns:
    
    OS string.
  - jdkString
```
public static String jdkString()
```
    Gets JDK string.
    
    Returns:
    
    JDK string.
  - isLinux
```
public static boolean isLinux()
```
    Indicates whether current OS is Linux flavor.
    
    Returns:
    
    true if current OS is Linux - false otherwise.
  - jdkName
```
public static String jdkName()
```
    Gets JDK name.
    
    Returns:
    
    JDK name.
  - jdkVendor
```
public static String jdkVendor()
```
    Gets JDK vendor.
    
    Returns:
    
    JDK vendor.
  - jdkVersion
```
public static String jdkVersion()
```
    Gets JDK version.
    
    Returns:
    
    JDK version.
  - osArchitecture
```
public static String osArchitecture()
```
    Gets OS CPU-architecture.
    
    Returns:
    
    OS CPU-architecture.
  - osName
```
public static String osName()
```
    Gets underlying OS name.
    
    Returns:
    
    Underlying OS name.
  - osVersion
```
public static String osVersion()
```
    Gets underlying OS version.
    
    Returns:
    
    Underlying OS version.
  - isMacOs
```
public static boolean isMacOs()
```
    Indicates whether current OS is Mac OS.
    
    Returns:
    
    true if current OS is Mac OS - false otherwise.
  - isRedHat
```
public static boolean isRedHat()
```
    Returns:
    
    True if current OS is RedHat.
  - isNetWare
```
public static boolean isNetWare()
```
    Indicates whether current OS is Netware.
    
    Returns:
    
    true if current OS is Netware - false otherwise.
  - isSolaris
```
public static boolean isSolaris()
```
    Indicates whether current OS is Solaris.
    
    Returns:
    
    true if current OS is Solaris (SPARC or x86) - false otherwise.
  - isSolarisSparc
```
public static boolean isSolarisSparc()
```
    Indicates whether current OS is Solaris on Spark box.
    
    Returns:
    
    true if current OS is Solaris SPARC - false otherwise.
  - isSolarisX86
```
public static boolean isSolarisX86()
```
    Indicates whether current OS is Solaris on x86 box.
    
    Returns:
    
    true if current OS is Solaris x86 - false otherwise.
  - isUnix
```
public static boolean isUnix()
```
    Indicates whether current OS is UNIX flavor.
    
    Returns:
    
    true if current OS is UNIX - false otherwise.
  - isWindows
```
public static boolean isWindows()
```
    Indicates whether current OS is Windows.
    
    Returns:
    
    true if current OS is Windows (any versions) - false otherwise.
  - isWindowsVista
```
public static boolean isWindowsVista()
```
    Indicates whether current OS is Windows Vista.
    
    Returns:
    
    true if current OS is Windows Vista - false otherwise.
  - isWindows7
```
public static boolean isWindows7()
```
    Indicates whether current OS is Windows 7.
    
    Returns:
    
    true if current OS is Windows 7 - false otherwise.
  - isWindows8
```
public static boolean isWindows8()
```
    Indicates whether current OS is Windows 8.
    
    Returns:
    
    true if current OS is Windows 8 - false otherwise.
  - isWindows81
```
public static boolean isWindows81()
```
    Indicates whether current OS is Windows 8.1.
    
    Returns:
    
    true if current OS is Windows 8.1 - false otherwise.
  - isWindows2k
```
public static boolean isWindows2k()
```
    Indicates whether current OS is Windows 2000.
    
    Returns:
    
    true if current OS is Windows 2000 - false otherwise.
  - isWindows2003
```
public static boolean isWindows2003()
```
    Indicates whether current OS is Windows Server 2003.
    
    Returns:
    
    true if current OS is Windows Server 2003 - false otherwise.
  - isWindows2008
```
public static boolean isWindows2008()
```
    Indicates whether current OS is Windows Server 2008.
    
    Returns:
    
    true if current OS is Windows Server 2008 - false otherwise.
  - isWindows95
```
public static boolean isWindows95()
```
    Indicates whether current OS is Windows 95.
    
    Returns:
    
    true if current OS is Windows 95 - false otherwise.
  - isWindows98
```
public static boolean isWindows98()
```
    Indicates whether current OS is Windows 98.
    
    Returns:
    
    true if current OS is Windows 98 - false otherwise.
  - isWindowsNt
```
public static boolean isWindowsNt()
```
    Indicates whether current OS is Windows NT.
    
    Returns:
    
    true if current OS is Windows NT - false otherwise.
  - isWindowsXp
```
public static boolean isWindowsXp()
```
    Indicates whether current OS is Windows XP.
    
    Returns:
    
    true if current OS is Windows XP- false otherwise.
  - jvmSpec
```
public static String jvmSpec()
```
    Gets JVM specification name.
    
    Returns:
    
    JVM specification name.
  - jvmVersion
```
public static String jvmVersion()
```
    Gets JVM implementation version.
    
    Returns:
    
    JVM implementation version.
  - jvmVendor
```
public static String jvmVendor()
```
    Gets JVM implementation vendor.
    
    Returns:
    
    JVM implementation vendor.
  - jvmName
```
public static String jvmName()
```
    Gets JVM implementation name.
    
    Returns:
    
    JVM implementation name.
  - jvm32Bit
```
public static boolean jvm32Bit()
```
    Does a best effort to detect if we a running on a 32-bit JVM.
    
    Returns:
    
    true if detected that we are running on a 32-bit JVM.
  - compareVersionNumbers
```
public static int compareVersionNumbers(@Nullable
                                        @Nullable String v1,
                                        @Nullable
                                        @Nullable String v2)
```
    Compare java implementation version
    
    Parameters:
    
    v1 - - java implementation version
    
    v2 - - java implementation version
    
    Returns:
    
    the value 0 if v1 == v2; a value less than 0 if v1 < v2; and a value greater than 0 if v1 > v2
  - productVersion
```
public static IgniteProductVersion productVersion(ClusterNode node)
```
    Gets node product version based on node attributes.
    
    Parameters:
    
    node - Node to get version from.
    
    Returns:
    
    Version object.
  - isJavaVersionAtLeast
```
public static boolean isJavaVersionAtLeast(String v)
```
    Compare running Java Runtime version with v
    
    Parameters:
    
    v - - java implementation version
    
    Returns:
    
    true if running on Java Runtime version greater than v
  - jreName
```
public static String jreName()
```
    Gets Java Runtime name.
    
    Returns:
    
    Java Runtime name.
  - jreVersion
```
public static String jreVersion()
```
    Gets Java Runtime version.
    
    Returns:
    
    Java Runtime version.
  - majorJavaVersion
```
public static int majorJavaVersion(String verStr)
```
    Get major Java version from string.
    
    Parameters:
    
    verStr - Version string.
    
    Returns:
    
    Major version or zero if failed to resolve.
  - isHotSpot
```
public static boolean isHotSpot()
```
    Indicates whether HotSpot VM is used.
    
    Returns:
    
    true if current JVM implementation is a Sun HotSpot VM, false otherwise.
  - wrapThreadLoader
```
@Nullable
public static <R> R wrapThreadLoader(ClassLoader ldr,
                                     Callable<R> c)
                              throws IgniteCheckedException
```
    Sets thread context class loader to the given loader, executes the closure, and then resets thread context class loader to its initial value.
    
    Type Parameters:
    
    R - Return type.
    
    Parameters:
    
    ldr - Class loader to run the closure under.
    
    c - Callable to run.
    
    Returns:
    
    Return value.
    
    Throws:
    
    IgniteCheckedException - If call failed.
  - wrapThreadLoader
```
@Nullable
public static <R> R wrapThreadLoader(ClassLoader ldr,
                                     IgniteOutClosure<R> c)
```
    Sets thread context class loader to the given loader, executes the closure, and then resets thread context class loader to its initial value.
    
    Type Parameters:
    
    R - Return type.
    
    Parameters:
    
    ldr - Class loader to run the closure under.
    
    c - Closure to run.
    
    Returns:
    
    Return value.
  - wrapThreadLoader
```
public static void wrapThreadLoader(ClassLoader ldr,
                                    Runnable c)
```
    Sets thread context class loader to the given loader, executes the closure, and then resets thread context class loader to its initial value.
    
    Parameters:
    
    ldr - Class loader to run the closure under.
    
    c - Closure to run.
  - toShortString
```
public static String toShortString(ClusterNode n)
```
    Short node representation.
    
    Parameters:
    
    n - Grid node.
    
    Returns:
    
    Short string representing the node.
  - toShortString
```
public static String toShortString(Collection<? extends ClusterNode> ns)
```
    Short node representation.
    
    Parameters:
    
    ns - Grid nodes.
    
    Returns:
    
    Short string representing the node.
  - toStringSafe
```
@Nullable
public static @Nullable String toStringSafe(@Nullable
                                            @Nullable Object obj)
```
    Get string representation of an object properly catching all exceptions.
    
    Parameters:
    
    obj - Object.
    
    Returns:
    
    Result or null.
  - toIntArray
```
public static int[] toIntArray(@Nullable
                               @Nullable Collection<Integer> c)
```
    Converts collection of integers into array.
    
    Parameters:
    
    c - Collection of integers.
    
    Returns:
    
    Integer array.
  - addAll
```
public static int[] addAll(int[] arr1,
                           int[] arr2)
```
    Parameters:
    
    arr1 - Array 1.
    
    arr2 - Array 2.
  - toIntList
```
public static List<Integer> toIntList(@Nullable
                                      @org.jetbrains.annotations.Nullable int[] arr,
                                      IgnitePredicate<Integer>... p)
```
    Converts array of integers into list.
    
    Parameters:
    
    arr - Array of integers.
    
    p - Optional predicate array.
    
    Returns:
    
    List of integers.
  - toLongArray
```
public static long[] toLongArray(@Nullable
                                 @Nullable Collection<Long> c)
```
    Converts collection of integers into array.
    
    Parameters:
    
    c - Collection of integers.
    
    Returns:
    
    Integer array.
  - toLongList
```
public static List<Long> toLongList(@Nullable
                                    @org.jetbrains.annotations.Nullable long[] arr)
```
    Converts array of longs into list.
    
    Parameters:
    
    arr - Array of longs.
    
    Returns:
    
    List of longs.
  - toLong
```
public static long toLong(int high,
                          int low)
```
    Concats two integers to long.
    
    Parameters:
    
    high - Highest bits.
    
    low - Lowest bits.
    
    Returns:
    
    Long.
  - toArray
```
public static <T> T[] toArray(Collection<? extends T> c,
                              T[] arr)
```
    Copies all elements from collection to array and asserts that array is big enough to hold the collection. This method should always be preferred to Collection.toArray(Object[]) method.
    
    Type Parameters:
    
    T - Element type.
    
    Parameters:
    
    c - Collection to convert to array.
    
    arr - Array to populate.
    
    Returns:
    
    Passed in array.
  - swap
```
public static void swap(Object[] arr,
                        int a,
                        int b)
```
    Swaps two objects in array.
    
    Parameters:
    
    arr - Array.
    
    a - Index of the first object.
    
    b - Index of the second object.
  - unique
```
public static int[] unique(int[] a,
                           int aLen,
                           int[] b,
                           int bLen)
```
    Returns array which is the union of two arrays (array of elements contained in any of provided arrays).
    Note: arrays must be increasing.
    
    Parameters:
    
    a - First array.
    
    aLen - Length of prefix a.
    
    b - Second array.
    
    bLen - Length of prefix b.
    
    Returns:
    
    Increasing array which is union of a and b.
  - difference
```
public static int[] difference(int[] a,
                               int aLen,
                               int[] b,
                               int bLen)
```
    Returns array which is the difference between two arrays (array of elements contained in first array but not contained in second).
    Note: arrays must be increasing.
    
    Parameters:
    
    a - First array.
    
    aLen - Length of prefix a.
    
    b - Second array.
    
    bLen - Length of prefix b.
    
    Returns:
    
    Increasing array which is difference between a and b.
  - isIncreasingArray
```
public static boolean isIncreasingArray(int[] arr,
                                        int len)
```
    Checks if array prefix increases.
    
    Parameters:
    
    arr - Array.
    
    len - Prefix length.
    
    Returns:
    
    True if arr from 0 to (len - 1) increases.
  - isNonDecreasingArray
```
public static boolean isNonDecreasingArray(int[] arr,
                                           int len)
```
    Checks if array prefix do not decreases.
    
    Parameters:
    
    arr - Array.
    
    len - Prefix length.
    
    Returns:
    
    True if arr from 0 to (len - 1) do not decreases.
  - copyIfExceeded
```
public static int[] copyIfExceeded(int[] arr,
                                   int len)
```
    Copies array only if array length greater than needed length.
    
    Parameters:
    
    arr - Array.
    
    len - Prefix length.
    
    Returns:
    
    Old array if length of arr is equals to len, otherwise copy of array.
  - addAll
```
public static <V,C extends Collection<? super V>> C addAll(C c,
                                                                 V... vals)
```
    Adds values to collection and returns the same collection to allow chaining.
    
    Type Parameters:
    
    V - Value type.
    
    Parameters:
    
    c - Collection to add values to.
    
    vals - Values.
    
    Returns:
    
    Passed in collection.
  - addAll
```
public static <K,V,M extends Map<K,V>> M addAll(M m,
                                                                  Map.Entry<K,V>... entries)
```
    Adds values to collection and returns the same collection to allow chaining.
    
    Type Parameters:
    
    K - Key type.
    
    V - Value type.
    
    M - Map type.
    
    Parameters:
    
    m - Map to add entries to.
    
    entries - Entries.
    
    Returns:
    
    Passed in collection.
  - addAll
```
public static <K,V,M extends Map<K,V>> M addAll(M m,
                                                                  IgniteBiTuple<K,V>... entries)
```
    Adds values to collection and returns the same collection to allow chaining.
    
    Type Parameters:
    
    K - Key type.
    
    V - Value type.
    
    M - Map type.
    
    Parameters:
    
    m - Map to add entries to.
    
    entries - Entries.
    
    Returns:
    
    Passed in collection.
  - jmException
```
public static JMException jmException(Throwable e)
```
    Utility method creating JMException with given cause. Keeps only the error message to avoid deserialization failure on remote side due to the other class path.
    
    Parameters:
    
    e - Cause exception.
    
    Returns:
    
    Newly created JMException.
  - unwrap
```
public static Exception unwrap(Throwable t)
```
    Unwraps closure exceptions.
    
    Parameters:
    
    t - Exception.
    
    Returns:
    
    Unwrapped exception.
  - cast
```
public static IgniteCheckedException cast(Throwable t)
```
    Casts the passed Throwable t to IgniteCheckedException.
    If t is a GridClosureException, it is unwrapped and then cast to IgniteCheckedException. If t is an IgniteCheckedException, it is returned. If t is not a IgniteCheckedException, a new IgniteCheckedException caused by t is returned.
    
    Parameters:
    
    t - Throwable to cast.
    
    Returns:
    
    t cast to IgniteCheckedException.
  - p2pLoader
```
public static boolean p2pLoader(Object o)
```
    Checks if class loader is an internal P2P class loader.
    
    Parameters:
    
    o - Object to check.
    
    Returns:
    
    True if P2P class loader.
  - p2pLoader
```
public static boolean p2pLoader(ClassLoader ldr)
```
    Checks if class loader is an internal P2P class loader.
    
    Parameters:
    
    ldr - Class loader to check.
    
    Returns:
    
    True if P2P class loader.
  - contextDeploymentClassLoaderId
```
public static IgniteUuid contextDeploymentClassLoaderId(GridKernalContext ctx)
```
    Returns Deployment class loader id if method was invoked in the job context (it may be the context of a cache's operation which was triggered by the distributed job) or null if no context was found or Deployment is switched off.
    
    Parameters:
    
    ctx - Kernal context.
    
    Returns:
    
    Deployment class loader id or null.
  - deploymentClassLoader
```
public static ClassLoader deploymentClassLoader(GridKernalContext ctx,
                                                IgniteUuid ldrId)
```
    Gets that deployment class loader matching by the specific id, or null if the class loader was not found.
    
    Parameters:
    
    ctx - Kernal context.
    
    ldrId - Class loader id.
    
    Returns:
    
    Deployment class loader or null.
  - restoreDeploymentContext
```
public static void restoreDeploymentContext(GridKernalContext ctx,
                                            IgniteUuid ldrId)
```
    Restores a deployment context for cache deployment.
    
    Parameters:
    
    ctx - Kernal context.
    
    ldrId - Class loader id.
  - id2Node
```
public static IgniteClosure<UUID,ClusterNode> id2Node(GridKernalContext ctx)
```
    Parameters:
    
    ctx - Kernal context.
    
    Returns:
    
    Closure that converts node ID to a node.
  - dumpStack
```
@Deprecated
public static void dumpStack(Thread t)
```
    Deprecated.
    Calls to this method should never be committed to master.
    
    Dumps stack for given thread.
    
    Parameters:
    
    t - Thread to dump stack for.
  - dumpStack
```
@Deprecated
public static void dumpStack(Thread t,
                             PrintStream s)
```
    Deprecated.
    Calls to this method should never be committed to master.
    
    Dumps stack for given thread.
    
    Parameters:
    
    t - Thread to dump stack for.
    
    s - PrintStream to use for output.
  - isPrimitiveArray
```
public static boolean isPrimitiveArray(Object obj)
```
    Checks if object is a primitive array.
    
    Parameters:
    
    obj - Object to check.
    
    Returns:
    
    True if Object is primitive array.
  - isPrimitiveOrWrapper
```
public static boolean isPrimitiveOrWrapper(Class<?> cls)
```
    Parameters:
    
    cls - Class.
    
    Returns:
    
    True if given class represents a primitive or a primitive wrapper class.
  - await
```
public static void await(Condition cond)
                  throws IgniteInterruptedCheckedException
```
    Awaits for condition.
    
    Parameters:
    
    cond - Condition to await for.
    
    Throws:
    
    IgniteInterruptedCheckedException - Wrapped InterruptedException
  - awaitQuiet
```
public static void awaitQuiet(Condition cond)
```
    Awaits for condition ignoring interrupts.
    
    Parameters:
    
    cond - Condition to await for.
  - await
```
public static boolean await(Condition cond,
                            long time,
                            TimeUnit unit)
                     throws IgniteInterruptedCheckedException
```
    Awaits for condition.
    
    Parameters:
    
    cond - Condition to await for.
    
    time - The maximum time to wait,
    
    unit - The unit of the time argument.
    
    Returns:
    
    false if the waiting time detectably elapsed before return from the method, else true
    
    Throws:
    
    IgniteInterruptedCheckedException - Wrapped InterruptedException
  - await
```
public static void await(CountDownLatch latch)
                  throws IgniteInterruptedCheckedException
```
    Awaits for the latch.
    
    Parameters:
    
    latch - Latch to wait for.
    
    Throws:
    
    IgniteInterruptedCheckedException - Wrapped InterruptedException.
  - await
```
public static boolean await(CountDownLatch latch,
                            long timeout,
                            TimeUnit unit)
                     throws IgniteInterruptedCheckedException
```
    Awaits for the latch.
    
    Parameters:
    
    latch - Latch to wait for.
    
    timeout - Maximum time to wait.
    
    unit - Time unit for timeout.
    
    Returns:
    
    True if the count reached zero and false if the waiting time elapsed before the count reached zero.
    
    Throws:
    
    IgniteInterruptedCheckedException - Wrapped InterruptedException.
  - awaitQuiet
```
public static void awaitQuiet(CountDownLatch latch)
```
    Awaits for the latch until it is counted down, ignoring interruptions.
    If calling thread was interrupted, interrupted status will be recovered prior to return.
    
    Parameters:
    
    latch - Latch to wait for.
  - awaitQuiet
```
public static void awaitQuiet(CyclicBarrier barrier)
```
    Awaits for the barrier ignoring interruptions.
    If calling thread was interrupted, interrupted status will be recovered prior to return. If the barrier is already broken, return immediately without throwing any exceptions.
    
    Parameters:
    
    barrier - Barrier to wait for.
  - classLoaderUrls
```
public static URL[] classLoaderUrls(ClassLoader clsLdr)
```
    Returns URLs of class loader
    
    Parameters:
    
    clsLdr - Class loader.
  - sleep
```
public static void sleep(long ms)
                  throws IgniteInterruptedCheckedException
```
    Sleeps for given number of milliseconds.
    
    Parameters:
    
    ms - Time to sleep.
    
    Throws:
    
    IgniteInterruptedCheckedException - Wrapped InterruptedException.
  - join
```
public static void join(GridWorker w)
                 throws IgniteInterruptedCheckedException
```
    Joins worker.
    
    Parameters:
    
    w - Worker.
    
    Throws:
    
    IgniteInterruptedCheckedException - Wrapped InterruptedException.
  - get
```
public static <T> T get(Future<T> fut)
                 throws IgniteCheckedException
```
    Gets result from the given future with right exception handling.
    
    Parameters:
    
    fut - Future.
    
    Returns:
    
    Future result.
    
    Throws:
    
    IgniteCheckedException - If failed.
  - join
```
public static void join(@Nullable
                        @Nullable Thread t)
                 throws IgniteInterruptedCheckedException
```
    Joins thread.
    
    Parameters:
    
    t - Thread.
    
    Throws:
    
    IgniteInterruptedCheckedException - Wrapped InterruptedException.
  - acquire
```
public static void acquire(Semaphore sem)
                    throws IgniteInterruptedCheckedException
```
    Acquires a permit from provided semaphore.
    
    Parameters:
    
    sem - Semaphore.
    
    Throws:
    
    IgniteInterruptedCheckedException - Wrapped InterruptedException.
  - tryAcquire
```
public static boolean tryAcquire(Semaphore sem,
                                 long timeout,
                                 TimeUnit unit)
                          throws IgniteInterruptedCheckedException
```
    Tries to acquire a permit from provided semaphore during timeout.
    
    Parameters:
    
    sem - Semaphore.
    
    timeout - The maximum time to wait.
    
    unit - The unit of the time argument.
    
    Returns:
    
    True if acquires a permit, false another.
    
    Throws:
    
    IgniteInterruptedCheckedException - Wrapped InterruptedException.
  - cacheAttributes
```
public static GridCacheAttributes[] cacheAttributes(ClusterNode n)
```
    Gets cache attributes for the node.
    
    Parameters:
    
    n - Node to get cache attributes for.
    
    Returns:
    
    Array of cache attributes for the node.
  - hasNearCache
```
public static boolean hasNearCache(ClusterNode n,
                                   String cacheName)
```
    Checks if given node has near cache enabled for the specified partitioned cache.
    
    Parameters:
    
    n - Node.
    
    cacheName - Cache name.
    
    Returns:
    
    true if given node has near cache enabled for the specified partitioned cache.
  - asyncLogError
```
public static void asyncLogError(IgniteInternalFuture<?> f,
                                 IgniteLogger log)
```
    Adds listener to asynchronously log errors.
    
    Parameters:
    
    f - Future to listen to.
    
    log - Logger.
  - nodeIds
```
public static Collection<UUID> nodeIds(@Nullable
                                       @Nullable Collection<? extends ClusterNode> nodes)
```
    Converts collection of nodes to collection of node IDs.
    
    Parameters:
    
    nodes - Nodes.
    
    Returns:
    
    Node IDs.
  - gridIds
```
public static Collection<UUID> gridIds(@Nullable
                                       @Nullable Collection<? extends Ignite> grids)
```
    Converts collection of Grid instances to collection of node IDs.
    
    Parameters:
    
    grids - Grids.
    
    Returns:
    
    Node IDs.
  - grids2names
```
public static Collection<String> grids2names(@Nullable
                                             @Nullable Collection<? extends Ignite> grids)
```
    Converts collection of Grid instances to collection of grid names.
    
    Parameters:
    
    grids - Grids.
    
    Returns:
    
    Grid names.
  - nodes2names
```
public static Collection<String> nodes2names(@Nullable
                                             @Nullable Collection<? extends ClusterNode> nodes)
```
    Converts collection of grid nodes to collection of grid names.
    
    Parameters:
    
    nodes - Nodes.
    
    Returns:
    
    Grid names.
  - addLastCause
```
public static boolean addLastCause(@Nullable
                                   @Nullable Throwable e,
                                   @Nullable
                                   @Nullable Throwable cause,
                                   IgniteLogger log)
```
    Adds cause to the end of cause chain.
    
    Parameters:
    
    e - Error to add cause to.
    
    cause - Cause to add.
    
    log - Logger to log failure when cause can not be added.
    
    Returns:
    
    True if cause was added.
  - nl
```
public static String nl()
```
    Returns:
    
    line.separator system property.
  - logger
```
public static IgniteLogger logger(GridKernalContext ctx,
                                  AtomicReference<IgniteLogger> logRef,
                                  Object obj)
```
    Initializes logger into/from log reference passed in.
    
    Parameters:
    
    ctx - Context.
    
    logRef - Log reference.
    
    obj - Object to get logger for.
    
    Returns:
    
    Logger for the object.
  - logger
```
public static IgniteLogger logger(GridKernalContext ctx,
                                  AtomicReference<IgniteLogger> logRef,
                                  Class<?> cls)
```
    Initializes logger into/from log reference passed in.
    
    Parameters:
    
    ctx - Context.
    
    logRef - Log reference.
    
    cls - Class to get logger for.
    
    Returns:
    
    Logger for the object.
  - concurrentMapSegment
```
public static int concurrentMapSegment(int hash,
                                       int concurLvl)
```
    Parameters:
    
    hash - Hash code of the object to put.
    
    concurLvl - Concurrency level.
    
    Returns:
    
    Segment index.
  - printConcurrentHashMapInfo
```
public static <K,V> void printConcurrentHashMapInfo(ConcurrentHashMap<K,V> map)
```
    Parameters:
    
    map - Map.
  - field
```
public static <T> T field(Object obj,
                          String fieldName)
```
    Gets field value.
    
    Parameters:
    
    obj - Object.
    
    fieldName - Field name.
    
    Returns:
    
    Field value.
  - hasField
```
public static boolean hasField(Object obj,
                               String fieldName)
```
    Check that field exist.
    
    Parameters:
    
    obj - Object.
    
    fieldName - Field name.
    
    Returns:
    
    Boolean flag.
  - fieldOffset
```
public static long fieldOffset(Class<?> cls,
                               String fieldName)
```
    Gets object field offset.
    
    Parameters:
    
    cls - Object class.
    
    fieldName - Field name.
    
    Returns:
    
    Field offset.
  - isFinal
```
public static boolean isFinal(Class<?> cls)
```
    Parameters:
    
    cls - Class to check.
    
    Returns:
    
    True if class is final.
  - field
```
public static <T> T field(Class<?> cls,
                          String fieldName)
                   throws IgniteCheckedException
```
    Gets field value.
    
    Parameters:
    
    cls - Class.
    
    fieldName - Field name.
    
    Returns:
    
    Field value.
    
    Throws:
    
    IgniteCheckedException - If static field with given name cannot be retreived.
  - invoke
```
public static <T> T invoke(@Nullable
                           @Nullable Class<?> cls,
                           @Nullable
                           @Nullable Object obj,
                           String mtdName,
                           Object... params)
                    throws IgniteCheckedException
```
    Invokes method.
    
    Parameters:
    
    cls - Object.
    
    obj - Object.
    
    mtdName - Field name.
    
    params - Parameters.
    
    Returns:
    
    Field value.
    
    Throws:
    
    IgniteCheckedException - If static field with given name cannot be retreived.
  - invoke
```
public static <T> T invoke(@Nullable
                           @Nullable Class<?> cls,
                           @Nullable
                           @Nullable Object obj,
                           String mtdName,
                           Class[] paramTypes,
                           Object... params)
                    throws IgniteCheckedException
```
    Invokes method.
    
    Parameters:
    
    cls - Object.
    
    obj - Object.
    
    mtdName - Field name.
    
    paramTypes - Parameter types.
    
    params - Parameters.
    
    Returns:
    
    Field value.
    
    Throws:
    
    IgniteCheckedException - If static field with given name cannot be retrieved.
  - property
```
public static <T> T property(Object obj,
                             String propName)
```
    Gets property value.
    
    Parameters:
    
    obj - Object.
    
    propName - Property name.
    
    Returns:
    
    Field value.
  - staticField
```
public static <T> T staticField(Class<?> cls,
                                String fieldName)
                         throws IgniteCheckedException
```
    Gets static field value.
    
    Parameters:
    
    cls - Class.
    
    fieldName - Field name.
    
    Returns:
    
    Field value.
    
    Throws:
    
    IgniteCheckedException - If failed.
  - isVisorNodeStartProperty
```
public static boolean isVisorNodeStartProperty(String name)
```
    Checks whether property is one added by Visor when node is started via remote SSH session.
    
    Parameters:
    
    name - Property name to check.
    
    Returns:
    
    True if property is Visor node startup property, false otherwise.
  - isVisorRequiredProperty
```
public static boolean isVisorRequiredProperty(String name)
```
    Checks whether property is one required by Visor to work correctly.
    
    Parameters:
    
    name - Property name to check.
    
    Returns:
    
    True if property is required by Visor, false otherwise.
  - addJavaNoOpLogger
```
public static Collection<Handler> addJavaNoOpLogger()
```
    Adds no-op console handler for root java logger.
    
    Returns:
    
    Removed handlers.
  - removeJavaNoOpLogger
```
public static void removeJavaNoOpLogger(Collection<Handler> rmvHnds)
```
    Removes previously added no-op handler for root java logger.
    
    Parameters:
    
    rmvHnds - Previously removed handlers.
  - nodeIdLogFileName
```
public static String nodeIdLogFileName(UUID nodeId,
                                       String fileName)
```
    Attaches node ID to log file name.
    
    Parameters:
    
    nodeId - Node ID.
    
    fileName - File name.
    
    Returns:
    
    File name with node ID.
  - customDirectoryLogFileName
```
public static String customDirectoryLogFileName(@Nullable
                                                @Nullable String dir,
                                                String fileName)
```
    Substitutes log directory with a custom one.
    
    Parameters:
    
    dir - Directory.
    
    fileName - Original path.
    
    Returns:
    
    New path.
  - fl
```
public static String fl(String msg,
                        Object... args)
```
    Creates string for log output.
    
    Parameters:
    
    msg - Message to start string.
    
    args - Even length array where the odd elements are parameter names and even elements are parameter values.
    
    Returns:
    
    Log message, formatted as recommended by Ignite guidelines.
  - nextPowerOf2
```
public static int nextPowerOf2(int v)
```
    Round up the argument to the next highest power of 2;
    
    Parameters:
    
    v - Value to round up.
    
    Returns:
    
    Next closest power of 2.
  - safeAbs
```
public static int safeAbs(int i)
```
    Gets absolute value for integer. If integer is Integer.MIN_VALUE, then 0 is returned.
    
    Parameters:
    
    i - Integer.
    
    Returns:
    
    Absolute value.
  - safeAbs
```
public static long safeAbs(long i)
```
    Gets absolute value for long. If argument is Long.MIN_VALUE, then 0 is returned.
    
    Parameters:
    
    i - Argument.
    
    Returns:
    
    Absolute value.
  - ensurePositive
```
public static long ensurePositive(long i,
                                  long dflt)
```
    When long value given is positive returns that value, otherwise returns provided default value.
    
    Parameters:
    
    i - Input value.
    
    dflt - Default value.
    
    Returns:
    
    i if i > 0 and dflt otherwise.
  - box
```
@Nullable
public static @Nullable Class<?> box(@Nullable
                                     @Nullable Class<?> cls)
```
    Gets wrapper class for a primitive type.
    
    Parameters:
    
    cls - Class. If null, method is no-op.
    
    Returns:
    
    Wrapper class or original class if it is non-primitive.
  - forName
```
public static Class<?> forName(String clsName,
                               @Nullable
                               @Nullable ClassLoader ldr)
                        throws ClassNotFoundException
```
    Gets class for provided name. Accepts primitive types names.
    
    Parameters:
    
    clsName - Class name.
    
    ldr - Class loader.
    
    Returns:
    
    Class.
    
    Throws:
    
    ClassNotFoundException - If class not found.
  - forName
```
public static Class<?> forName(String clsName,
                               @Nullable
                               @Nullable ClassLoader ldr,
                               IgnitePredicate<String> clsFilter)
                        throws ClassNotFoundException
```
    Gets class for provided name. Accepts primitive types names.
    
    Parameters:
    
    clsName - Class name.
    
    ldr - Class loader.
    
    Returns:
    
    Class.
    
    Throws:
    
    ClassNotFoundException - If class not found.
  - forName
```
public static Class<?> forName(String clsName,
                               @Nullable
                               @Nullable ClassLoader ldr,
                               IgnitePredicate<String> clsFilter,
                               boolean useCache)
                        throws ClassNotFoundException
```
    Gets class for provided name. Accepts primitive types names.
    
    Parameters:
    
    clsName - Class name.
    
    ldr - Class loader.
    
    useCache - If true class loader and result should be cached internally, false otherwise.
    
    Returns:
    
    Class.
    
    Throws:
    
    ClassNotFoundException - If class not found.
  - clearClassFromClassCache
```
public static void clearClassFromClassCache(ClassLoader ldr,
                                            String clsName)
```
    Clears class associated with provided class loader from class cache.
    
    Parameters:
    
    ldr - Class loader.
    
    clsName - Class name of clearing class.
  - clearClassCache
```
public static void clearClassCache(ClassLoader ldr)
```
    Clears class cache for provided loader.
    
    Parameters:
    
    ldr - Class loader.
  - clearClassCache
```
public static void clearClassCache()
```
    Completely clears class cache.
  - hash
```
public static int hash(int h)
```
    Applies a supplemental hash function to a given hashCode, which defends against poor quality hash functions. This is critical because ConcurrentHashMap uses power-of-two length hash tables, that otherwise encounter collisions for hashCodes that do not differ in lower or upper bits.
    This function has been taken from Java 8 ConcurrentHashMap with slightly modifications.
    
    Parameters:
    
    h - Value to hash.
    
    Returns:
    
    Hash value.
  - hash
```
public static int hash(Object key)
```
    Applies a supplemental hash function to a given hashCode, which defends against poor quality hash functions. This is critical because ConcurrentHashMap uses power-of-two length hash tables, that otherwise encounter collisions for hashCodes that do not differ in lower or upper bits.
    This function has been taken from Java 8 ConcurrentHashMap with slightly modifications.
    
    Parameters:
    
    key - Value to hash.
    
    Returns:
    
    Hash value.
  - hash
```
public static int hash(long key)
```
    A primitive override of hash(Object) to avoid unnecessary boxing.
    
    Parameters:
    
    key - Value to hash.
    
    Returns:
    
    Hash value.
  - jvmPid
```
public static int jvmPid()
```
    Returns:
    
    PID of the current JVM or -1 if it can't be determined.
  - jvmArgs
```
public static List<String> jvmArgs()
```
    Returns:
    
    Input arguments passed to the JVM which does not include the arguments to the main method.
  - arrayCopy
```
public static int arrayCopy(byte[] src,
                            int off,
                            byte[] resBuf,
                            int resOff,
                            int len)
```
    Parameters:
    
    src - Buffer to copy from (length included).
    
    off - Offset in source buffer.
    
    resBuf - Result buffer.
    
    resOff - Result offset.
    
    len - Length.
    
    Returns:
    
    Number of bytes overwritten in bytes array.
  - consistentId
```
public static String consistentId(Collection<String> addrs)
```
    Parameters:
    
    addrs - Node's addresses.
    
    Returns:
    
    A string compatible with ClusterNode.consistentId() requirements.
  - consistentId
```
public static String consistentId(Collection<String> addrs,
                                  int port)
```
    Parameters:
    
    addrs - Node's addresses.
    
    port - Port discovery number.
    
    Returns:
    
    A string compatible with ClusterNode.consistentId() requirements.
  - maskForFileName
```
public static String maskForFileName(CharSequence name)
```
    Masks name for a valid directory path.
    
    Parameters:
    
    name - Name.
    
    Returns:
    
    Masked name.
  - overridesEqualsAndHashCode
```
public static boolean overridesEqualsAndHashCode(Object obj)
```
    Parameters:
    
    obj - Object.
    
    Returns:
    
    True if given object has overridden equals and hashCode method.
  - overridesEqualsAndHashCode
```
public static boolean overridesEqualsAndHashCode(Class<?> cls)
```
    Parameters:
    
    cls - Class.
    
    Returns:
    
    True if given class has overridden equals and hashCode method.
  - isMacInvalidArgumentError
```
public static boolean isMacInvalidArgumentError(Exception e)
```
    Checks if error is MAC invalid argument error which ususally requires special handling.
    
    Parameters:
    
    e - Exception.
    
    Returns:
    
    True if error is invalid argument error on MAC.
  - firstNotNull
```
@Nullable
public static <T> T firstNotNull(@Nullable
                                 @Nullable T... vals)
```
    Returns a first non-null value in a given array, if such is present.
    
    Parameters:
    
    vals - Input array.
    
    Returns:
    
    First non-null value, or null, if array is empty or contains only nulls.
  - startLifecycleAware
```
public static void startLifecycleAware(Iterable<?> objs)
                                throws IgniteCheckedException
```
    For each object provided by the given Iterable checks if it implements LifecycleAware interface and executes LifecycleAware.start() method.
    
    Parameters:
    
    objs - Objects.
    
    Throws:
    
    IgniteCheckedException - If LifecycleAware.start() fails.
  - stopLifecycleAware
```
public static void stopLifecycleAware(IgniteLogger log,
                                      Iterable<?> objs)
```
    For each object provided by the given Iterable checks if it implements LifecycleAware interface and executes LifecycleAware.stop() method.
    
    Parameters:
    
    log - Logger used to log error message in case of stop failure.
    
    objs - Object passed to Ignite configuration.
  - neighborhood
```
public static Map<String,Collection<ClusterNode>> neighborhood(Iterable<ClusterNode> nodes)
```
    Groups given nodes by the node's physical computer (host).
    Detection of the same physical computer (host) is based on comparing set of network interface MACs. If two nodes have the same set of MACs, Ignite considers these nodes running on the same physical computer.
    
    Parameters:
    
    nodes - Nodes.
    
    Returns:
    
    Collection of projections where each projection represents all nodes (in this projection) from a single physical computer. Result collection can be empty if this projection is empty.
  - toSocketAddresses
```
public static Collection<InetSocketAddress> toSocketAddresses(ClusterNode node,
                                                              int port)
```
    Returns the list of resolved socket addresses.
    
    Parameters:
    
    node - Grid node.
    
    port - Port.
    
    Returns:
    
    Socket addresses for given addresses and host names.
  - toSocketAddresses
```
public static Collection<InetSocketAddress> toSocketAddresses(Collection<String> addrs,
                                                              Collection<String> hostNames,
                                                              int port)
```
    Returns the list of resolved socket addresses.
    
    Parameters:
    
    addrs - Addresses.
    
    hostNames - Host names.
    
    port - Port.
    
    Returns:
    
    Socket addresses for given addresses and host names.
  - resolveAddresses
```
public static Collection<InetSocketAddress> resolveAddresses(AddressResolver addrRslvr,
                                                             Iterable<String> addrs,
                                                             int port)
                                                      throws IgniteSpiException
```
    Resolves all not loopback addresses and collect results.
    
    Parameters:
    
    addrRslvr - Address resolver.
    
    addrs - Addresses.
    
    port - Port.
    
    Returns:
    
    Resolved socket addresses.
    
    Throws:
    
    IgniteSpiException - If failed.
  - resolveAddresses
```
public static Collection<InetSocketAddress> resolveAddresses(AddressResolver addrRslvr,
                                                             Collection<InetSocketAddress> sockAddr)
```
    Parameters:
    
    addrRslvr - Address resolver.
    
    sockAddr - Addresses.
    
    Returns:
    
    Resolved addresses.
  - addressesAsString
```
public static String addressesAsString(ClusterNode node)
```
    Returns string representation of node addresses.
    
    Parameters:
    
    node - Grid node.
    
    Returns:
    
    String representation of addresses.
  - addressesAsString
```
public static String addressesAsString(Collection<String> addrs,
                                       Collection<String> hostNames)
```
    Returns string representation of addresses.
    
    Parameters:
    
    addrs - Addresses.
    
    hostNames - Host names.
    
    Returns:
    
    String representation of addresses.
  - defaultWorkDirectory
```
public static String defaultWorkDirectory()
                                   throws IgniteCheckedException
```
    Get default work directory.
    
    Returns:
    
    Default work directory.
    
    Throws:
    
    IgniteCheckedException
  - workDirectory
```
public static String workDirectory(@Nullable
                                   @Nullable String userWorkDir,
                                   @Nullable
                                   @Nullable String userIgniteHome)
                            throws IgniteCheckedException
```
    Get work directory for the given user-provided work directory and Ignite home.
    
    Parameters:
    
    userWorkDir - Ignite work folder provided by user.
    
    userIgniteHome - Ignite home folder provided by user.
    
    Throws:
    
    IgniteCheckedException
  - nullifyHomeDirectory
```
public static void nullifyHomeDirectory()
```
    Nullifies Ignite home directory. For test purposes only.
  - resolveWorkDirectory
```
public static File resolveWorkDirectory(String workDir,
                                        String path,
                                        boolean delIfExist)
                                 throws IgniteCheckedException
```
    Resolves work directory.
    
    Parameters:
    
    workDir - Work directory.
    
    path - Path to resolve.
    
    delIfExist - Flag indicating whether to delete the specify directory or not.
    
    Returns:
    
    Resolved work directory.
    
    Throws:
    
    IgniteCheckedException - If failed.
  - resolveWorkDirectory
```
public static File resolveWorkDirectory(String workDir,
                                        String path,
                                        boolean delIfExist,
                                        boolean create)
                                 throws IgniteCheckedException
```
    Resolves work directory.
    
    Parameters:
    
    workDir - Work directory.
    
    path - Path to resolve.
    
    delIfExist - Flag indicating whether to delete the specify directory or not.
    
    create - If true then directory must be created if not exists.
    
    Returns:
    
    Resolved work directory.
    
    Throws:
    
    IgniteCheckedException - If failed.
  - ensureDirectory
```
public static void ensureDirectory(File dir,
                                   String msg,
                                   IgniteLogger log)
                            throws IgniteCheckedException
```
    Checks if the given directory exists and attempts to create one if not.
    
    Parameters:
    
    dir - Directory to check.
    
    msg - Directory name for the messages.
    
    log - Optional logger to log a message that the directory has been resolved.
    
    Throws:
    
    IgniteCheckedException - If directory does not exist and failed to create it, or if a file with the same name already exists.
  - ensureDirectory
```
public static void ensureDirectory(Path dir,
                                   String msg,
                                   IgniteLogger log)
                            throws IgniteCheckedException
```
    Checks if the given directory exists and attempts to create one if not.
    
    Parameters:
    
    dir - Directory to check.
    
    msg - Directory name for the messages.
    
    log - Optional logger to log a message that the directory has been resolved.
    
    Throws:
    
    IgniteCheckedException - If directory does not exist and failed to create it, or if a file with the same name already exists.
  - exceptionWithSuppressed
```
public static IgniteCheckedException exceptionWithSuppressed(String msg,
                                                             @Nullable
                                                             @Nullable Collection<Throwable> suppressed)
```
    Creates IgniteCheckedException with the collection of suppressed exceptions.
    
    Parameters:
    
    msg - Message.
    
    suppressed - The collections of suppressed exceptions.
    
    Returns:
    
    IgniteCheckedException.
  - lambdaEnclosingClassName
```
@Nullable
public static @Nullable String lambdaEnclosingClassName(String clsName)
```
    Extracts full name of enclosing class from JDK8 lambda class name.
    
    Parameters:
    
    clsName - JDK8 lambda class name.
    
    Returns:
    
    Full name of enclosing class for JDK8 lambda class name or null if passed in name is not related to lambda.
  - toDigit
```
public static int toDigit(char ch,
                          int idx)
                   throws IgniteCheckedException
```
    Converts a hexadecimal character to an integer.
    
    Parameters:
    
    ch - A character to convert to an integer digit
    
    idx - The index of the character in the source
    
    Returns:
    
    An integer
    
    Throws:
    
    IgniteCheckedException - Thrown if ch is an illegal hex character
  - oldest
```
public static ClusterNode oldest(Collection<ClusterNode> c,
                                 @Nullable
                                 @Nullable IgnitePredicate<ClusterNode> p)
```
    Gets oldest node out of collection of nodes.
    
    Parameters:
    
    c - Collection of nodes.
    
    Returns:
    
    Oldest node.
  - youngest
```
public static ClusterNode youngest(Collection<ClusterNode> c,
                                   @Nullable
                                   @Nullable IgnitePredicate<ClusterNode> p)
```
    Gets youngest node out of collection of nodes.
    
    Parameters:
    
    c - Collection of nodes.
    
    Returns:
    
    Youngest node.
  - copyMemory
```
public static byte[] copyMemory(long ptr,
                                int size)
```
    Parameters:
    
    ptr - Address.
    
    size - Size.
    
    Returns:
    
    Bytes.
  - capacity
```
public static int capacity(int expSize)
```
    Returns a capacity that is sufficient to keep the map from being resized as long as it grows no larger than expSize and the load factor is >= its default (0.75). Copy pasted from guava. See com.google.common.collect.Maps#capacity(int)
    
    Parameters:
    
    expSize - Expected size of created map.
    
    Returns:
    
    Capacity.
  - newHashMap
```
public static <K,V> HashMap<K,V> newHashMap(int expSize)
```
    Creates new HashMap with expected size.
    
    Type Parameters:
    
    K - Type of map keys.
    
    V - Type of map values.
    
    Parameters:
    
    expSize - Expected size of created map.
    
    Returns:
    
    New map.
  - newLinkedHashMap
```
public static <K,V> LinkedHashMap<K,V> newLinkedHashMap(int expSize)
```
    Creates new LinkedHashMap with expected size.
    
    Type Parameters:
    
    K - Type of map keys.
    
    V - Type of map values.
    
    Parameters:
    
    expSize - Expected size of created map.
    
    Returns:
    
    New map.
  - newHashSet
```
public static <T> HashSet<T> newHashSet(int expSize)
```
    Creates new HashSet with expected size.
    
    Type Parameters:
    
    T - Type of elements.
    
    Parameters:
    
    expSize - Expected size of created map.
    
    Returns:
    
    New set.
  - newLinkedHashSet
```
public static <T> LinkedHashSet<T> newLinkedHashSet(int expSize)
```
    Creates new LinkedHashSet with expected size.
    
    Type Parameters:
    
    T - Type of elements.
    
    Parameters:
    
    expSize - Expected size of created map.
    
    Returns:
    
    New set.
  - limitedMap
```
public static <K,V> Map<K,V> limitedMap(int limit)
```
    Creates new map that limited by size.
    
    Parameters:
    
    limit - Limit for size.
  - map
```
public static <K,V> Map<K,V> map(K k,
                                             V v)
```
    Create a map with single key-value pair.
    
    Parameters:
    
    k - Key.
    
    v - Value.
    
    Returns:
    
    Map.
  - map
```
public static <K,V> Map<K,V> map(K k1,
                                             V v1,
                                             K k2,
                                             V v2)
```
    Create a map with two key-value pairs.
    
    Parameters:
    
    k1 - Key 1.
    
    v1 - Value 1.
    
    k2 - Key 2.
    
    v2 - Value 2.
    
    Returns:
    
    Map.
  - map
```
public static <K,V> Map<K,V> map(K k1,
                                             V v1,
                                             K k2,
                                             V v2,
                                             K k3,
                                             V v3)
```
    Create a map with three key-value pairs.
    
    Parameters:
    
    k1 - Key 1.
    
    v1 - Value 1.
    
    k2 - Key 2.
    
    v2 - Value 2.
    
    k3 - Key 3.
    
    v3 - Value 3.
    
    Returns:
    
    Map.
  - convertToSingletonList
```
public static <T> Collection<T> convertToSingletonList(Collection<T> col)
```
    Parameters:
    
    col - non-null collection with one element
    
    Returns:
    
    a SingletonList containing the element in the original collection
  - inetAddressesComparator
```
public static Comparator<InetSocketAddress> inetAddressesComparator(boolean sameHost)
```
    Returns comparator that sorts remote node addresses. If remote node resides on the same host, then put loopback addresses first, last otherwise.
    
    Parameters:
    
    sameHost - True if remote node resides on the same host, false otherwise.
    
    Returns:
    
    Comparator.
  - findNonPublicMethod
```
@Nullable
public static @Nullable Method findNonPublicMethod(Class<?> cls,
                                                   String name,
                                                   Class<?>... paramTypes)
```
    Finds a method in the class and it parents. Method.getMethod() does not return non-public method, Method.getDeclaratedMethod() does not look at parent classes.
    
    Parameters:
    
    cls - The class to search,
    
    name - Name of the method.
    
    paramTypes - Method parameters.
    
    Returns:
    
    Method or null.
  - getNonPublicMethod
```
@Nullable
public static @Nullable Method getNonPublicMethod(Class<?> cls,
                                                  String name,
                                                  Class<?>... paramTypes)
```
    Gets a method from the class. Method.getMethod() does not return non-public method.
    
    Parameters:
    
    cls - Target class.
    
    name - Name of the method.
    
    paramTypes - Method parameters.
    
    Returns:
    
    Method or null.
  - findInheritableMethod
```
@Nullable
public static @Nullable Method findInheritableMethod(Class<?> cls,
                                                     String name,
                                                     Class<?>... paramTypes)
```
    Finds a non-static and non-abstract method from the class it parents. Method.getMethod() does not return non-public method.
    
    Parameters:
    
    cls - Target class.
    
    name - Name of the method.
    
    paramTypes - Method parameters.
    
    Returns:
    
    Method or null.
  - packageName
```
public static String packageName(Class<?> cls)
```
    Parameters:
    
    cls - Class.
    
    Returns:
    
    Package name.
  - findField
```
@Nullable
public static @Nullable Field findField(Class<?> cls,
                                        String name)
```
    Parameters:
    
    cls - The class to search.
    
    name - Name of a field to get.
    
    Returns:
    
    Field or null.
  - arrayList
```
public static <T extends R,R> List<R> arrayList(Collection<T> c,
                                                      @Nullable
                                                      @Nullable IgnitePredicate<? super T>... p)
```
    Parameters:
    
    c - Collection.
    
    p - Optional filters.
    
    Returns:
    
    Resulting array list.
  - arrayList
```
public static <T extends R,R> List<R> arrayList(Collection<T> c)
```
    Parameters:
    
    c - Collection.
    
    Returns:
    
    Resulting array list.
  - arrayList
```
public static <T extends R,R> List<R> arrayList(Iterator<T> c,
                                                      int cap,
                                                      @Nullable
                                                      @Nullable IgnitePredicate<? super T>... p)
```
    Parameters:
    
    c - Collection.
    
    cap - Initial capacity.
    
    p - Optional filters.
    
    Returns:
    
    Resulting array list.
  - calculateMD5Digest
```
public static byte[] calculateMD5Digest(@NotNull
                                        @NotNull InputStream in)
                                 throws NoSuchAlgorithmException,
                                        IOException
```
    Calculate MD5 digits.
    
    Parameters:
    
    in - Input stream.
    
    Returns:
    
    Calculated MD5 digest for given input stream.
    
    Throws:
    
    NoSuchAlgorithmException - If MD5 algorithm was not found.
    
    IOException - If an I/O exception occurs.
  - calculateMD5
```
public static String calculateMD5(InputStream in)
                           throws NoSuchAlgorithmException,
                                  IOException
```
    Calculate MD5 string.
    
    Parameters:
    
    in - Input stream.
    
    Returns:
    
    Calculated MD5 string for given input stream.
    
    Throws:
    
    NoSuchAlgorithmException - If MD5 algorithm was not found.
    
    IOException - If an I/O exception occurs.
  - writeMessageFully
```
public static int writeMessageFully(Message msg,
                                    OutputStream out,
                                    ByteBuffer buf,
                                    MessageWriter writer)
                             throws IOException
```
    Fully writes communication message to provided stream.
    
    Parameters:
    
    msg - Message.
    
    out - Stream to write to.
    
    buf - Byte buffer that will be passed to Message.writeTo(ByteBuffer, MessageWriter) method.
    
    writer - Message writer.
    
    Returns:
    
    Number of written bytes.
    
    Throws:
    
    IOException - In case of error.
  - assertParameter
```
public static void assertParameter(boolean cond,
                                   String condDesc)
                            throws IgniteException
```
    Throws exception with uniform error message if given parameter's assertion condition is false.
    
    Parameters:
    
    cond - Assertion condition to check.
    
    condDesc - Description of failed condition.
    
    Throws:
    
    IgniteException
  - writeLock
```
public static void writeLock(ReadWriteLock lock)
                      throws IgniteInterruptedCheckedException
```
    Parameters:
    
    lock - Lock.
    
    Throws:
    
    IgniteInterruptedCheckedException - If interrupted.
  - isHashCodeMethod
```
public static boolean isHashCodeMethod(Method mtd)
```
    Returns:
    
    Whether provided method is Object.hashCode().
  - isEqualsMethod
```
public static boolean isEqualsMethod(Method mtd)
```
    Returns:
    
    Whether provided method is Object.equals(...).
  - isToStringMethod
```
public static boolean isToStringMethod(Method mtd)
```
    Returns:
    
    Whether provided method is Object.toString().
  - threadName
```
public static String threadName(long threadId)
```
    Parameters:
    
    threadId - Thread ID.
    
    Returns:
    
    Thread name if found.
  - max
```
public static <T extends Comparable<? super T>> T max(T t0,
                                                      T t1)
```
    Type Parameters:
    
    T - Comparable type.
    
    Parameters:
    
    t0 - Comparable object.
    
    t1 - Comparable object.
    
    Returns:
    
    Maximal object o t0 and t1.
  - unmarshal
```
public static <T> T unmarshal(Marshaller marsh,
                              InputStream in,
                              @Nullable
                              @Nullable ClassLoader clsLdr)
                       throws IgniteCheckedException
```
    Unmarshals object from the input stream using given class loader. This method should not close given input stream.
    This method wraps marshaller invocations and guaranty throws IgniteCheckedException in fail case.
    
    Type Parameters:
    
    T - Type of unmarshalled object.
    
    Parameters:
    
    in - Input stream.
    
    clsLdr - Class loader to use.
    
    Returns:
    
    Unmarshalled object.
    
    Throws:
    
    IgniteCheckedException - If unmarshalling failed.
  - unmarshalZip
```
public static <T> T unmarshalZip(Marshaller marsh,
                                 byte[] zipBytes,
                                 @Nullable
                                 @Nullable ClassLoader clsLdr)
                          throws IgniteCheckedException
```
    Parameters:
    
    marsh - Marshaller.
    
    zipBytes - Zip-compressed bytes.
    
    clsLdr - Class loader to use.
    
    Returns:
    
    Unmarshalled object.
    
    Throws:
    
    IgniteCheckedException
  - unzip
```
public static byte[] unzip(byte[] zipBytes)
                    throws IgniteCheckedException
```
    Parameters:
    
    zipBytes - Zipped bytes.
    
    Returns:
    
    Raw bytes.
    
    Throws:
    
    IgniteCheckedException - If unzip resulted in error.
  - unmarshal
```
public static <T> T unmarshal(Marshaller marsh,
                              byte[] arr,
                              @Nullable
                              @Nullable ClassLoader clsLdr)
                       throws IgniteCheckedException
```
    Unmarshals object from the input stream using given class loader. This method should not close given input stream.
    This method wraps marshaller invocations and guaranty throws IgniteCheckedException in fail case.
    
    Type Parameters:
    
    T - Type of unmarshalled object.
    
    Parameters:
    
    marsh - Marshaller.
    
    arr - Byte array.
    
    clsLdr - Class loader to use.
    
    Returns:
    
    Unmarshalled object.
    
    Throws:
    
    IgniteCheckedException - If unmarshalling failed.
  - unmarshal
```
public static <T> T unmarshal(GridKernalContext ctx,
                              byte[] arr,
                              @Nullable
                              @Nullable ClassLoader clsLdr)
                       throws IgniteCheckedException
```
    Unmarshals object from the input stream using given class loader. This method should not close given input stream.
    This method wraps marshaller invocations and guaranty throws IgniteCheckedException in fail case.
    
    Type Parameters:
    
    T - Type of unmarshalled object.
    
    Parameters:
    
    ctx - Kernal contex.
    
    arr - Byte array.
    
    clsLdr - Class loader to use.
    
    Returns:
    
    Unmarshalled object.
    
    Throws:
    
    IgniteCheckedException - If unmarshalling failed.
  - unmarshal
```
public static <T> T unmarshal(GridCacheSharedContext ctx,
                              byte[] arr,
                              @Nullable
                              @Nullable ClassLoader clsLdr)
                       throws IgniteCheckedException
```
    Unmarshals object from the input stream using given class loader. This method should not close given input stream.
    This method wraps marshaller invocations and guaranty throws IgniteCheckedException in fail case.
    
    Type Parameters:
    
    T - Type of unmarshalled object.
    
    Parameters:
    
    ctx - Kernal contex.
    
    arr - Byte array.
    
    clsLdr - Class loader to use.
    
    Returns:
    
    Unmarshalled object.
    
    Throws:
    
    IgniteCheckedException - If unmarshalling failed.
  - marshal
```
public static byte[] marshal(Marshaller marsh,
                             Object obj)
                      throws IgniteCheckedException
```
    Marshals object to byte array.
    This method wraps marshaller invocations and guaranty throws IgniteCheckedException in fail case.
    
    Parameters:
    
    marsh - Marshaller.
    
    obj - Object to marshal.
    
    Returns:
    
    Byte array.
    
    Throws:
    
    IgniteCheckedException - If marshalling failed.
  - marshal
```
public static void marshal(Marshaller marsh,
                           @Nullable
                           @Nullable Object obj,
                           OutputStream out)
                    throws IgniteCheckedException
```
    Marshals object to byte array.
    This method wraps marshaller invocations and guaranty throws IgniteCheckedException in fail case.
    
    Parameters:
    
    marsh - Marshaller.
    
    obj - Object to marshal.
    
    out - Output stream.
    
    Throws:
    
    IgniteCheckedException - If marshalling failed.
  - marshal
```
public static byte[] marshal(GridKernalContext ctx,
                             Object obj)
                      throws IgniteCheckedException
```
    Marshals object to byte array. Wrap marshaller
    This method wraps marshaller invocations and guaranty throws IgniteCheckedException in fail case.
    
    Parameters:
    
    ctx - Kernal context.
    
    obj - Object to marshal.
    
    Returns:
    
    Byte array.
    
    Throws:
    
    IgniteCheckedException - If marshalling failed.
  - marshal
```
public static byte[] marshal(GridCacheSharedContext ctx,
                             Object obj)
                      throws IgniteCheckedException
```
    Marshals object to byte array. Wrap marshaller
    This method wraps marshaller invocations and guaranty throws IgniteCheckedException in fail case.
    
    Parameters:
    
    ctx - Cache context.
    
    obj - Object to marshal.
    
    Returns:
    
    Byte array.
    
    Throws:
    
    IgniteCheckedException - If marshalling failed.
  - getCurrentIgniteName
```
@Nullable
public static @Nullable String getCurrentIgniteName()
```
    Get current Ignite name.
    
    Returns:
    
    Current Ignite name.
  - isCurrentIgniteNameSet
```
public static boolean isCurrentIgniteNameSet(@Nullable
                                             @Nullable String name)
```
    Check if current Ignite name is set.
    
    Parameters:
    
    name - Name to check.
    
    Returns:
    
    True if set.
  - setCurrentIgniteName
```
@Nullable
public static @Nullable String setCurrentIgniteName(@Nullable
                                                    @Nullable String newName)
```
    Set current Ignite name.
    
    Parameters:
    
    newName - New name.
    
    Returns:
    
    Old name.
  - restoreOldIgniteName
```
public static void restoreOldIgniteName(@Nullable
                                        @Nullable String oldName,
                                        @Nullable
                                        @Nullable String curName)
```
    Restore old Ignite name.
    
    Parameters:
    
    oldName - Old name.
    
    curName - Current name.
  - zip
```
public static byte[] zip(@Nullable
                         @org.jetbrains.annotations.Nullable byte[] bytes)
                  throws IgniteCheckedException
```
    Zip binary payload using default compression.
    
    Parameters:
    
    bytes - Byte array to compress.
    
    Returns:
    
    Compressed bytes.
    
    Throws:
    
    IgniteCheckedException - If failed.
  - zip
```
public static byte[] zip(@Nullable
                         @org.jetbrains.annotations.Nullable byte[] bytes,
                         int compressionLevel)
                  throws IgniteCheckedException
```
    Parameters:
    
    bytes - Byte array to compress.
    
    compressionLevel - Level of compression to encode.
    
    Returns:
    
    Compressed bytes.
    
    Throws:
    
    IgniteCheckedException - If failed.
  - toBytes
```
public static byte[] toBytes(Serializable obj)
```
    Serialize object to byte array.
    
    Parameters:
    
    obj - Object.
    
    Returns:
    
    Serialized object.
  - fromBytes
```
public static <T> T fromBytes(byte[] data)
```
    Deserialize object from byte array.
    
    Parameters:
    
    data - Serialized object.
    
    Returns:
    
    Object.
  - checkpointBufferSize
```
public static long checkpointBufferSize(DataRegionConfiguration regCfg)
```
    Get checkpoint buffer size for the given configuration.
    
    Parameters:
    
    regCfg - Configuration.
    
    Returns:
    
    Checkpoint buffer size.
  - adjustedWalHistorySize
```
public static long adjustedWalHistorySize(DataStorageConfiguration dsCfg,
                                          @Nullable
                                          @Nullable IgniteLogger log)
```
    Calculates maximum WAL archive size based on maximum checkpoint buffer size, if the default value of DataStorageConfiguration.getMaxWalArchiveSize() is not overridden.
    
    Returns:
    
    User-set max WAL archive size of triple size of the maximum checkpoint buffer.
  - fileCount
```
public static int fileCount(Path dir)
                     throws IOException
```
    Return count of regular file in the directory (including in sub-directories)
    
    Parameters:
    
    dir - path to directory
    
    Returns:
    
    count of regular file
    
    Throws:
    
    IOException - sometimes
  - dirSize
```
public static long dirSize(Path path)
                    throws IgniteCheckedException
```
    Will calculate the size of a directory. If there is concurrent activity in the directory, than returned value may be wrong.
    
    Throws:
    
    IgniteCheckedException
  - searchFileRecursively
```
public static Path searchFileRecursively(Path path,
                                         @NotNull
                                         @NotNull String name)
                                  throws IgniteCheckedException
```
    Parameters:
    
    path - Path.
    
    name - Name.
    
    Throws:
    
    IgniteCheckedException
  - forRange
```
public static GridIntIterator forRange(int start,
                                       int cnt)
```
    Returns GridIntIterator for range of primitive integers.
    
    Parameters:
    
    start - Start.
    
    cnt - Count.
  - nearestPow2
```
public static int nearestPow2(int x)
```
    Parameters:
    
    x - X.
  - nearestPow2
```
public static int nearestPow2(int x,
                              boolean less)
```
    Parameters:
    
    x - X.
    
    less - Less.
  - enhanceThreadName
```
public static void enhanceThreadName(String text)
```
    Puts additional text to thread name. Calls enhanceThreadName(Thread.currentThread(), text). For details see enhanceThreadName(Thread, String).
    
    Parameters:
    
    text - Text to be set in thread name in square [] braces. Does nothing if cannot find suitable braces.
  - enhanceThreadName
```
public static void enhanceThreadName(@Nullable
                                     @Nullable Thread thread,
                                     String text)
```
    Puts additional text to thread name. It finds first square braces in thread name and sets required text in them. For example, thread has name "my-thread-[]-%gridname%". After calling enhanceThreadName(thread, "myText"), the name of the thread will be "my-thread-[myText]-%gridname%".
    This allows to set additional mutable info to thread, like remote host IP address or so.
    
    Parameters:
    
    thread - Thread to be renamed, it must contain square braces in name []. Does nothing if null.
    
    text - Text to be set in thread name in square [] braces. Does nothing if cannot find suitable braces.
  - getBaselineTopology
```
public static BaselineTopology getBaselineTopology(@NotNull
                                                   @NotNull GridKernalContext ctx)
```
    Parameters:
    
    ctx - Context.
    
    Returns:
    
    instance of current baseline topology if it exists
  - getBaselineTopology
```
public static BaselineTopology getBaselineTopology(@NotNull
                                                   @NotNull GridCacheSharedContext cctx)
```
    Parameters:
    
    cctx - Context.
    
    Returns:
    
    instance of current baseline topology if it exists
  - getBaselineTopology
```
public static BaselineTopology getBaselineTopology(@NotNull
                                                   @NotNull GridCacheContext cctx)
```
    Parameters:
    
    cctx - Context.
    
    Returns:
    
    instance of current baseline topology if it exists
  - isOldestNodeVersionAtLeast
```
public static boolean isOldestNodeVersionAtLeast(IgniteProductVersion ver,
                                                 Iterable<ClusterNode> nodes)
```
    Check that node Ignite product version is not less then specified.
    
    Parameters:
    
    ver - Target Ignite product version.
    
    nodes - Cluster nodes.
    
    Returns:
    
    True if ignite product version of all nodes is not less then ver.
  - toHexString
```
public static String toHexString(long addr,
                                 int len)
```
    Parameters:
    
    addr - pointer in memory
    
    len - how much byte to read (should divide 8)
    
    Returns:
    
    hex representation of memory region
  - toHexString
```
public static String toHexString(ByteBuffer buf)
```
    Parameters:
    
    buf - which content should be converted to string
    
    Returns:
    
    hex representation of memory region
  - randomServerNode
```
public static ClusterNode randomServerNode(GridKernalContext ctx)
```
    Parameters:
    
    ctx - Kernel context.
    
    Returns:
    
    Random alive server node.
  - availableThreadCount
```
public static int availableThreadCount(GridKernalContext ctx,
                                       byte plc,
                                       int reserved)
```
    Parameters:
    
    ctx - Kernal context.
    
    plc - IO Policy.
    
    reserved - Thread to reserve.
    
    Returns:
    
    Number of available threads in executor service for plc. If plc is invalid, return 1.
  - doInParallel
```
public static <T,R> Collection<R> doInParallel(ExecutorService executorSvc,
                                                     Collection<T> srcDatas,
                                                     IgniteThrowableFunction<T,R> operation)
                                              throws IgniteCheckedException,
                                                     IgniteInterruptedCheckedException
```
    Execute operation on data in parallel.
    
    Type Parameters:
    
    T - Type of data.
    
    Parameters:
    
    executorSvc - Service for parallel execution.
    
    srcDatas - List of data for parallelization.
    
    operation - Logic for execution of on each item of data.
    
    Throws:
    
    IgniteCheckedException - if parallel execution was failed.
    
    IgniteInterruptedCheckedException
  - doInParallel
```
public static <T,R> Collection<R> doInParallel(int parallelismLvl,
                                                     ExecutorService executorSvc,
                                                     Collection<T> srcDatas,
                                                     IgniteThrowableFunction<T,R> operation)
                                              throws IgniteCheckedException,
                                                     IgniteInterruptedCheckedException
```
    Execute operation on data in parallel.
    
    Type Parameters:
    
    T - Type of data.
    
    R - Type of return value.
    
    Parameters:
    
    parallelismLvl - Number of threads on which it should be executed.
    
    executorSvc - Service for parallel execution.
    
    srcDatas - List of data for parallelization.
    
    operation - Logic for execution of on each item of data.
    
    Throws:
    
    IgniteCheckedException - if parallel execution was failed.
    
    IgniteInterruptedCheckedException
  - doInParallelUninterruptibly
```
public static <T,R> Collection<R> doInParallelUninterruptibly(int parallelismLvl,
                                                                    ExecutorService executorSvc,
                                                                    Collection<T> srcDatas,
                                                                    IgniteThrowableFunction<T,R> operation)
                                                             throws IgniteCheckedException,
                                                                    IgniteInterruptedCheckedException
```
    Execute operation on data in parallel uninterruptibly.
    
    Type Parameters:
    
    T - Type of data.
    
    R - Type of return value.
    
    Parameters:
    
    parallelismLvl - Number of threads on which it should be executed.
    
    executorSvc - Service for parallel execution.
    
    srcDatas - List of data for parallelization.
    
    operation - Logic for execution of on each item of data.
    
    Throws:
    
    IgniteCheckedException - if parallel execution was failed.
    
    IgniteInterruptedCheckedException
  - addSuppressed
```
public static <T extends Throwable> T addSuppressed(T root,
                                                    T err)
```
    Utility method to add the given throwable error to the given throwable root error. If the given suppressed throwable is an Error, but the root error is not, will change the root to the Error.
    
    Parameters:
    
    root - Root error to add suppressed error to.
    
    err - Error to add.
    
    Returns:
    
    New root error.
  - isLocalNodeCoordinator
```
public static boolean isLocalNodeCoordinator(GridDiscoveryManager discoMgr)
```
    Returns:
    
    true if local node is coordinator.
  - calculateOptimalBatchSizes
```
public static int[] calculateOptimalBatchSizes(int parallelismLvl,
                                               int size)
```
    Split number of tasks into optimized batches.
    
    Parameters:
    
    parallelismLvl - Level of parallelism.
    
    size - number of tasks to split.
    
    Returns:
    
    array of batch sizes.
  - wrapIgniteFuture
```
public static Runnable wrapIgniteFuture(Runnable r,
                                        GridFutureAdapter<?> fut)
```
    Parameters:
    
    r - Runnable.
    
    fut - Grid future apater.
    
    Returns:
    
    Runnable with wrapped future.
  - createCipher
```
public static Cipher createCipher(Key key,
                                  int encMode)
```
    Parameters:
    
    key - Cipher Key.
    
    encMode - Enc mode see Cipher.ENCRYPT_MODE, Cipher.DECRYPT_MODE, etc.
  - writeFully
```
public static void writeFully(SocketChannel sockCh,
                              ByteBuffer buf)
                       throws IOException
```
    Safely write buffer fully to blocking socket channel. Will throw assert if non blocking channel passed.
    
    Parameters:
    
    sockCh - WritableByteChannel.
    
    buf - Buffer.
    
    Throws:
    
    IOException - IOException.
  - newIdentityHashSet
```
public static <X> Set<X> newIdentityHashSet()
```
    Returns:
    
    New identity hash set.
  - stripeIdx
```
public static int stripeIdx(int stripes,
                            int grpId,
                            int partId)
```
    Parameters:
    
    stripes - Number of stripes.
    
    grpId - Group Id.
    
    partId - Partition Id.
    
    Returns:
    
    Stripe idx.
  - isFlagSet
```
public static boolean isFlagSet(int flags,
                                int flag)
```
    Check if flag set.
    
    Parameters:
    
    flags - Flags.
    
    flag - Flag.
    
    Returns:
    
    True if set.
  - notifyListeners
```
public static <T> void notifyListeners(T t,
                                       Collection<Consumer<T>> lsnrs,
                                       IgniteLogger log)
```
    Notifies provided lsnrs with the value t.
    
    Type Parameters:
    
    T - Type of consumed object.
    
    Parameters:
    
    t - Consumed object.
    
    lsnrs - Listeners.
  - awaitForWorkersStop
```
public static void awaitForWorkersStop(Collection<GridWorker> workers,
                                       boolean cancel,
                                       @Nullable
                                       @Nullable IgniteLogger log)
```
    Stops workers from given collection and waits for their completion.
    
    Parameters:
    
    workers - Workers collection.
    
    cancel - Wheter should cancel workers.
    
    log - Logger.
  - unquote
```
public static String unquote(String s)
```
    Unquote the given string.
    
    Parameters:
    
    s - String.
    
    Returns:
    
    Unquoted string.
  - writeLongString
```
public static void writeLongString(DataOutput out,
                                   @Nullable
                                   @Nullable String s)
                            throws IOException
```
    Writes string to output stream accounting for null values.
    This method can write string of any length, no UTF_BYTE_LIMIT limits are applied.
    
    Parameters:
    
    out - Output stream to write to.
    
    s - String to write, possibly null.
    
    Throws:
    
    IOException - If write failed.
  - readLongString
```
@Nullable
public static @Nullable String readLongString(DataInput in)
                                       throws IOException
```
    Reads string from input stream accounting for null values.
    This method can read string of any length, no UTF_BYTE_LIMIT limits are applied.
    
    Parameters:
    
    in - Stream to read from.
    
    Returns:
    
    Read string, possibly null.
    
    Throws:
    
    IOException - If read failed.
  - writeCutString
```
public static void writeCutString(DataOutput out,
                                  @Nullable
                                  @Nullable String s)
                           throws IOException
```
    Writes string to output stream accounting for null values.
    
    Uses ObjectOutputStream.writeUTF(String) to write the string under the hood but cuts strings longer than UTF_BYTE_LIMIT to the limit to avoid UTFDataFormatException.
    
    Strings written by the method can be read by readString(DataInput).
    
    Parameters:
    
    out - Output stream to write to.
    
    s - String to write, possibly null.
    
    Throws:
    
    IOException - If write failed.
    
    See Also:
    
    for more information.
  - utfBytes
```
public static int utfBytes(char c)
```
    Get number of bytes for DataOutput.writeUTF(java.lang.String), depending on character:
    One byte - If a character c is in the range \u0001 through \u007f.
    Two bytes - If a character c is \u0000 or is in the range \u0080 through \u07ff.
    Three bytes - If a character c is in the range \u0800 through uffff.
    
    Parameters:
    
    c - Character.
    
    Returns:
    
    Number of bytes.
  - broadcastToNodesWithFilterAsync
```
public static IgniteFuture<Void> broadcastToNodesWithFilterAsync(GridKernalContext kctx,
                                                                 IgniteRunnable job,
                                                                 boolean srvrsOnly,
                                                                 IgnitePredicate<ClusterNode> nodeFilter)
```
    Broadcasts given job to nodes that match filter.
    
    Parameters:
    
    kctx - Kernal context.
    
    job - Ignite job.
    
    srvrsOnly - Broadcast only on server nodes.
    
    nodeFilter - Node filter.
  - readStringMap
```
public static Map<String,String> readStringMap(DataInput in)
                                              throws IOException
```
    Reads string-to-string map written by writeStringMap(DataOutput, Map).
    
    Parameters:
    
    in - Data input.
    
    Returns:
    
    Read result.
    
    Throws:
    
    IOException - If write failed.
  - writeStringMap
```
public static void writeStringMap(DataOutput out,
                                  @Nullable
                                  @Nullable Map<String,String> map)
                           throws IOException
```
    Writes string-to-string map to given data output.
    
    Parameters:
    
    out - Data output.
    
    map - Map.
    
    Throws:
    
    IOException - If write failed.
  - writeUTF
```
public static void writeUTF(DataOutput out,
                            @Nullable
                            @Nullable String val)
                     throws IOException
```
    Write UTF string which can be null.
    
    Parameters:
    
    out - Output stream.
    
    val - Value.
    
    Throws:
    
    IOException - If failed.
  - readUTF
```
public static String readUTF(DataInput in)
                      throws IOException
```
    Read UTF string which can be null.
    
    Parameters:
    
    in - Input stream.
    
    Returns:
    
    Value.
    
    Throws:
    
    IOException - If failed.
  - humanReadableByteCount
```
public static String humanReadableByteCount(long bytes)
```
    Converts count of bytes to a human-readable format. Examples: 10 -> 10.0 B, 2048 -> 2.0 KB, etc.
    
    Parameters:
    
    bytes - Byte count.
    
    Returns:
    
    Human readable format for count of bytes.
  - humanReadableDuration
```
public static String humanReadableDuration(long millis)
```
    Converts duration to a human-readable format. Examples: 10 -> 10ms, 6_0000 -> 6s, 65_000 -> 1m5s, (65 * 60_000 + 32_000) -> 1h5m32s, etc.
    
    Parameters:
    
    millis - Duration in milliseconds.
    
    Returns:
    
    Human readable format for duration.
  - uncompressedSize
```
public static long uncompressedSize(File zip)
                             throws IOException
```
    Getting the total size of uncompressed data in zip.
    
    Parameters:
    
    zip - Zip file.
    
    Returns:
    
    Total uncompressed size.
    
    Throws:
    
    IOException - If failed.
  - hashToIndex
```
public static int hashToIndex(int hash,
                              int size)
```
    Maps object hash to some index between 0 and specified size via modulo operation.
    
    Parameters:
    
    hash - Object hash.
    
    size - Size greater than 0.
    
    Returns:
    
    Calculated index in range [0..size).
  - acceptServerSocket
```
public static Socket acceptServerSocket(ServerSocket srvrSock)
                                 throws IOException
```
    Invokes ServerSocket.accept() method on the passed server socked, working around the https://bugs.openjdk.java.net/browse/JDK-8247750 in the process.
    
    Parameters:
    
    srvrSock - Server socket.
    
    Returns:
    
    New socket.
    
    Throws:
    
    IOException - If an I/O error occurs when waiting for a connection.
    
    See Also:
    
    ServerSocket.accept()
  - language
```
public static String language(ClassLoader ldr)
```
    Returns:
    
    Language runtime.
  - isJmxRemoteEnabled
```
public static boolean isJmxRemoteEnabled()
```
    Returns:
    
    True if remote JMX management is enabled - false otherwise.
  - isRestEnabled
```
public static boolean isRestEnabled(IgniteConfiguration cfg)
```
    Returns:
    
    true if the REST processor is enabled, false the otherwise.
  - isRestartEnabled
```
public static boolean isRestartEnabled()
```
    Returns:
    
    True if restart mode is enabled, false otherwise.
  - isLambda
```
public static boolean isLambda(Class<?> objectClass)
```
    Returns true if class is a lambda.
    
    Parameters:
    
    objectClass - Class.
    
    Returns:
    
    true if class is a lambda, false otherwise.
  - classCannotBeLoadedByName
```
public static boolean classCannotBeLoadedByName(Class<?> objectClass)
```
    Returns true if class can not be loaded by name.
    
    Parameters:
    
    objectClass - Class.
    
    Returns:
    
    true if class can not be loaded by name, false otherwise.
  - extendToLen
```
public static String extendToLen(String s,
                                 int targetLen)
```
    Appends spaces to end of input string for extending to needed length.
    
    Parameters:
    
    s - Input string.
    
    targetLen - Needed length.
    
    Returns:
    
    String with appended spaces on the end.
  - isTxAwareQueriesEnabled
```
public static boolean isTxAwareQueriesEnabled(GridKernalContext kctx)
```

Class IgniteUtils

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

KB

MB

GB

UTF_BYTE_LIMIT

DFLT_MIN_CHECKPOINTING_PAGE_BUFFER_SIZE

DFLT_MAX_CHECKPOINTING_PAGE_BUFFER_SIZE

DFLT_MBEAN_APPEND_CLASS_LOADER_ID

EMPTY_INTS

EMPTY_LONGS

EMPTY_STRS

EMPTY_FIELDS

EMPTY_UUIDS

DFLT_USER_VERSION

THREAD_DUMP_MSG

NUMBER_FILE_NAME_LENGTH

IGNITE_PKG

JMX_DOMAIN

IGNITE_HEADER

LONG_DATE_FMT

SHORT_DATE_FMT

DEBUG_DATE_FMT

INTERFACE_SUPPLIER

MAC_INVALID_ARG_MSG

DELIM

IGNITE_LOG_DIR

IGNITE_WORK_DIR

LOC_IGNITE_NAME_EMPTY

IGNITE_MBEANS_DISABLED

IGNITE_TEST_FEATURES_ENABLED

IGNITE_SUCCESS_FILE_PROPERTY

IGNITE_JMX_REMOTE_PROPERTY

Constructor Detail

IgniteUtils

Method Detail

getExceptionConverter

allPluginProviders

allPluginProviders

loadService

convertExceptionNoWrap

convertException

currentTimeMillis

millisToNanos

nanosToMillis

millisSinceNanos

ceilPow2

isPow2

ctorFactory

objectConstructor

sunReflectionFactory

gridEventName

gridEvents

discoOrdered

relaxDiscoveryOrdered

debug

debugx

debug

dumpStack

dumpStack

dumpStack

dumpStack

debugStack

debugHeapUsage

heapSize

heapSize

offheapSize

heapSize

dumpThreads

dumpThreads

printStackTrace

stackTrace

deadlockPresent

forceEmptyConstructor

classForName