alluxio.worker.block.meta

Class StorageDirView

java.lang.Object

alluxio.worker.block.meta.StorageDirView

@NotThreadSafe
public final class StorageDirView
extends Object

This class is a wrapper of StorageDir to provide more limited access and a filtered list of blocks.

Constructor Summary

Constructors

Constructor and Description
StorageDirView(StorageDir dir, StorageTierView tierView, BlockMetadataManagerView managerView) Creates a StorageDirView using the actual StorageDir and the associated BlockMetadataManagerView.

Method Summary

Modifier and Type	Method and Description
void	clearBlockMarks() Clears all marks about blocks to move in/out in this view.
TempBlockMeta	createTempBlockMeta(long sessionId, long blockId, long initialBlockSize) Creates a TempBlockMeta given sessionId, blockId, and initialBlockSize.
long	getAvailableBytes() Gets available bytes for this dir.
long	getCapacityBytes() Gets capacity bytes for this dir.
long	getCommittedBytes() Gets committed bytes for this dir.
int	getDirViewIndex() Gets the index of this Dir.
List<BlockMeta>	getEvictableBlocks() Gets a filtered list of block metadata, for blocks that are neither pinned or being blocked.
long	getEvitableBytes() Gets evictable bytes for this dir, i.e., the total bytes of total evictable blocks.
StorageTierView	getParentTierView()
boolean	isMarkedToMoveOut(long blockId) Returns an indication whether the given block is marked to be moved out.
void	markBlockMoveIn(long blockId, long blockSize) Marks a block to move into this dir view, which is used by the evictor.
void	markBlockMoveOut(long blockId, long blockSize) Marks a block to move out of this dir view, which is used by the evictor.
BlockStoreLocation	toBlockStoreLocation() Creates a BlockStoreLocation for this directory view.

Methods inherited from class java.lang.Object

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

Constructor Detail

StorageDirView

public StorageDirView(StorageDir dir,
                      StorageTierView tierView,
                      BlockMetadataManagerView managerView)

Creates a StorageDirView using the actual StorageDir and the associated BlockMetadataManagerView.

Parameters:

dir - which the dirView is constructed from

tierView - which the dirView is under

managerView - which the dirView is associated with

Method Detail

getDirViewIndex

public int getDirViewIndex()

Gets the index of this Dir.

Returns:

index of the dir

getEvictableBlocks

public List<BlockMeta> getEvictableBlocks()

Gets a filtered list of block metadata, for blocks that are neither pinned or being blocked.

Returns:

a list of metadata for all evictable blocks

getCapacityBytes

public long getCapacityBytes()

Gets capacity bytes for this dir.

Returns:

capacity bytes for this dir

getAvailableBytes

public long getAvailableBytes()

Gets available bytes for this dir.

Returns:

available bytes for this dir

getCommittedBytes

public long getCommittedBytes()

Gets committed bytes for this dir. This includes all blocks, locked, pinned, committed etc.

Returns:

committed bytes for this dir

getEvitableBytes

public long getEvitableBytes()

Gets evictable bytes for this dir, i.e., the total bytes of total evictable blocks.

Returns:

evictable bytes for this dir

clearBlockMarks

public void clearBlockMarks()

Clears all marks about blocks to move in/out in this view.

createTempBlockMeta

public TempBlockMeta createTempBlockMeta(long sessionId,
                                         long blockId,
                                         long initialBlockSize)

Creates a TempBlockMeta given sessionId, blockId, and initialBlockSize.

Parameters:

sessionId - of the owning session

blockId - of the new block

initialBlockSize - of the new block

Returns:

a new TempBlockMeta under the underlying directory

getParentTierView

public StorageTierView getParentTierView()

Returns:

parent tier view

isMarkedToMoveOut

public boolean isMarkedToMoveOut(long blockId)

Returns an indication whether the given block is marked to be moved out.

Parameters:

blockId - the block ID

Returns:

whether the block is marked to be moved out

markBlockMoveIn

public void markBlockMoveIn(long blockId,
                            long blockSize)

Marks a block to move into this dir view, which is used by the evictor.

Parameters:

blockId - the Id of the block

blockSize - the block size

markBlockMoveOut

public void markBlockMoveOut(long blockId,
                             long blockSize)

Marks a block to move out of this dir view, which is used by the evictor.

Parameters:

blockId - the Id of the block

blockSize - the block size

toBlockStoreLocation

public BlockStoreLocation toBlockStoreLocation()

Creates a BlockStoreLocation for this directory view. Redirecting to StorageDir.toBlockStoreLocation()

Returns:

BlockStoreLocation created