org.apache.ignite.internal.processors.hadoop

Class HadoopClasspathUtils

java.lang.Object

org.apache.ignite.internal.processors.hadoop.HadoopClasspathUtils

public class HadoopClasspathUtils
extends Object

Hadoop classpath utilities.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	HadoopClasspathUtils.AcceptAllDirectoryFilter Filter to accept all files.
static interface	HadoopClasspathUtils.DirectoryFilter Directory filter interface.
static class	HadoopClasspathUtils.ExactDirectoryFilter Filter which uses exact comparison.
static class	HadoopClasspathUtils.PrefixDirectoryFilter Filter which uses prefix to filter files.
static class	HadoopClasspathUtils.SearchDirectory Simple pair-like structure to hold directory name and a mask assigned to it.

Field Summary

Fields

Modifier and Type	Field and Description
static String	COMMON_HOME Hadoop common directory.
static String	HADOOP_USER_LIBS Arbitrary additional dependencies.
static String	HDFS_HOME Hadoop HDFS directory.
static String	HOME Hadoop home directory.
static String	MAPRED_HOME Hadoop mapred directory.
static String	PREFIX Prefix directory.

Constructor Summary

Constructors

Constructor and Description
HadoopClasspathUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static List<URL>	classpathForClassLoader() Gets Hadoop class path as a list of URLs (for in-process class loader usage).
static boolean	exists(String path) Answers if the given path denotes existing directory.
static HadoopLocations	locations() Gets Hadoop locations.
static Collection<HadoopClasspathUtils.SearchDirectory>	parseUserLibs() Parse user libs.
static Collection<HadoopClasspathUtils.SearchDirectory>	parseUserLibs(String str) Parse user libs.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PREFIX

public static final String PREFIX

Prefix directory.

See Also:

Constant Field Values

HOME

public static final String HOME

Hadoop home directory.

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Constant Field Values

COMMON_HOME

public static final String COMMON_HOME

Hadoop common directory.

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Constant Field Values

HDFS_HOME

public static final String HDFS_HOME

Hadoop HDFS directory.

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Constant Field Values

MAPRED_HOME

public static final String MAPRED_HOME

Hadoop mapred directory.

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Constant Field Values

HADOOP_USER_LIBS

public static final String HADOOP_USER_LIBS

Arbitrary additional dependencies. Compliant with standard Java classpath resolution.

See Also:

Constant Field Values

Constructor Detail

HadoopClasspathUtils

public HadoopClasspathUtils()

Method Detail

classpathForClassLoader

public static List<URL> classpathForClassLoader()
                                         throws IOException

Gets Hadoop class path as a list of URLs (for in-process class loader usage).

Returns:

List of class path URLs.

Throws:

IOException - If failed.

locations

public static HadoopLocations locations()
                                 throws IOException

Gets Hadoop locations.

Returns:

The locations as determined from the environment.

Throws:

IOException

parseUserLibs

public static Collection<HadoopClasspathUtils.SearchDirectory> parseUserLibs()
                                                                      throws IOException

Parse user libs.

Returns:

Parsed libs search patterns.

Throws:

IOException - If failed.

parseUserLibs

public static Collection<HadoopClasspathUtils.SearchDirectory> parseUserLibs(String str)
                                                                      throws IOException

Parse user libs.

Parameters:

str - String.

Returns:

Result.

Throws:

IOException - If failed.

exists

public static boolean exists(String path)

Answers if the given path denotes existing directory.

Parameters:

path - The directory path.

Returns:

True if the given path denotes an existing directory.