alluxio.worker.block.meta

Class DefaultBlockMeta

java.lang.Object

alluxio.worker.block.meta.DefaultBlockMeta

All Implemented Interfaces:

BlockMeta

@ThreadSafe
public class DefaultBlockMeta
extends Object
implements BlockMeta

Represents the metadata of a block in Alluxio managed storage.

Constructor Summary

Constructors

Constructor and Description
DefaultBlockMeta(long blockId, long blockSize, StorageDir dir) Creates a new instance of DefaultBlockMeta.
DefaultBlockMeta(TempBlockMeta tempBlock) Creates a new instance of DefaultBlockMeta from DefaultTempBlockMeta.

Method Summary

Modifier and Type	Method and Description
static String	commitPath(StorageDir dir, long blockId) Committed block is stored in BlockStore under its StorageDir as a block file named after its blockId.
long	getBlockId()
BlockStoreLocation	getBlockLocation()
long	getBlockSize()
StorageDir	getParentDir()
String	getPath()

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultBlockMeta

public DefaultBlockMeta(long blockId,
                        long blockSize,
                        StorageDir dir)

Creates a new instance of DefaultBlockMeta.

Parameters:

blockId - the block id

blockSize - the block size

dir - the parent directory

DefaultBlockMeta

public DefaultBlockMeta(TempBlockMeta tempBlock)

Creates a new instance of DefaultBlockMeta from DefaultTempBlockMeta.

Parameters:

tempBlock - uncommitted block metadata

Method Detail

commitPath

public static String commitPath(StorageDir dir,
                                long blockId)

Committed block is stored in BlockStore under its StorageDir as a block file named after its blockId. e.g. Block 100 of StorageDir "/mnt/mem/0" has path:

/mnt/mem/0/100

Parameters:

blockId - the block id

dir - the parent directory

Returns:

committed file path

getBlockId

public long getBlockId()

Specified by:

getBlockId in interface BlockMeta

Returns:

the block id

getBlockLocation

public BlockStoreLocation getBlockLocation()

Specified by:

getBlockLocation in interface BlockMeta

Returns:

location of the block

getBlockSize

public long getBlockSize()

Specified by:

getBlockSize in interface BlockMeta

Returns:

the block size

getPath

public String getPath()

Specified by:

getPath in interface BlockMeta

Returns:

the block path

getParentDir

public StorageDir getParentDir()

Specified by:

getParentDir in interface BlockMeta

Returns:

the parent directory