org.apache.ignite.internal.processors.cache.persistence.file

Class FilePageStoreV2

java.lang.Object

org.apache.ignite.internal.processors.cache.persistence.file.FilePageStore

org.apache.ignite.internal.processors.cache.persistence.file.FilePageStoreV2

All Implemented Interfaces:

Closeable, AutoCloseable, PageStore

public class FilePageStoreV2
extends FilePageStore

Field Summary

Fields

Modifier and Type	Field and Description
static int	VERSION File version.

Fields inherited from class org.apache.ignite.internal.processors.cache.persistence.file.FilePageStore

dbCfg, fileIO, HEADER_SIZE, pageSize

Constructor Summary

Constructors

Constructor and Description
FilePageStoreV2(byte type, IgniteOutClosure<Path> pathProvider, FileIOFactory factory, DataStorageConfiguration cfg, LongAdderMetric allocatedTracker) Constructor which initializes file path provider closure, allowing to calculate file path in any time.

Method Summary

Modifier and Type	Method and Description
int	getBlockSize()
long	getSparseSize()
int	headerSize() Size of page store header.
void	punchHole(long pageId, int usefulBytes) Should free all the extra storage space after the given number of useful bytes in the given page.
int	version() Page store version.

Methods inherited from class org.apache.ignite.internal.processors.cache.persistence.file.FilePageStore

addWriteListener, allocatePage, beginRecover, close, ensure, exists, finishRecover, getFileAbsolutePath, getPageSize, header, init, pageOffset, pages, read, readHeader, removeWriteListener, size, stop, sync, truncate, write

Methods inherited from class java.lang.Object

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

Field Detail

VERSION

public static final int VERSION

File version.

See Also:

Constant Field Values

Constructor Detail

FilePageStoreV2

public FilePageStoreV2(byte type,
                       IgniteOutClosure<Path> pathProvider,
                       FileIOFactory factory,
                       DataStorageConfiguration cfg,
                       LongAdderMetric allocatedTracker)

Constructor which initializes file path provider closure, allowing to calculate file path in any time.

Parameters:

type - Type.

pathProvider - file path provider.

factory - Factory.

cfg - Config.

allocatedTracker - Allocated tracker.

Method Detail

headerSize

public int headerSize()

Size of page store header.

Overrides:

headerSize in class FilePageStore

version

public int version()

Page store version.

Specified by:

version in interface PageStore

Overrides:

version in class FilePageStore

Returns:

Page store version.

getBlockSize

public int getBlockSize()

Specified by:

getBlockSize in interface PageStore

Overrides:

getBlockSize in class FilePageStore

Returns:

Storage block size or negative value if unknown or not supported.

getSparseSize

public long getSparseSize()

Specified by:

getSparseSize in interface PageStore

Overrides:

getSparseSize in class FilePageStore

Returns:

Size of the storage adjusted for sparsity in bytes or negative value if not supported. Should be less than or equal to PageStore.size().

See Also:

PageStore.punchHole(long, int)

punchHole

public void punchHole(long pageId,
                      int usefulBytes)

Should free all the extra storage space after the given number of useful bytes in the given page.

Specified by:

punchHole in interface PageStore

Overrides:

punchHole in class FilePageStore

Parameters:

pageId - Page id.

usefulBytes - Number of meaningful bytes from the beginning of the page.