alluxio.worker.block.meta

Class StorageDirEvictorView

java.lang.Object

alluxio.worker.block.meta.StorageDirView

alluxio.worker.block.meta.StorageDirEvictorView

public class StorageDirEvictorView
extends StorageDirView

This class is a wrapper of StorageDir to provide more limited access for evictors.

Constructor Summary

Constructors

Constructor and Description
StorageDirEvictorView(StorageDir dir, StorageTierEvictorView tierView, BlockMetadataEvictorView managerView) Creates a StorageDirEvictorView using the actual StorageDir and the associated BlockMetadataEvictorView.

Method Summary

Modifier and Type	Method and Description
void	clearBlockMarks() Clears all marks about blocks to move in/out in this view.
long	getAvailableBytes() Gets available bytes for 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.
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.

Methods inherited from class alluxio.worker.block.meta.StorageDirView

createTempBlockMeta, getCapacityBytes, getCommittedBytes, getDirViewIndex, getMediumType, getParentTierView, getReservedBytes, toBlockStoreLocation

Methods inherited from class java.lang.Object

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

Constructor Detail

StorageDirEvictorView

public StorageDirEvictorView(StorageDir dir,
                             StorageTierEvictorView tierView,
                             BlockMetadataEvictorView managerView)

Creates a StorageDirEvictorView using the actual StorageDir and the associated BlockMetadataEvictorView.

Parameters:

dir - which the dirView is constructed from

tierView - which the dirView is under

managerView - which the dirView is associated with

Method Detail

getAvailableBytes

public long getAvailableBytes()

Description copied from class: StorageDirView

Gets available bytes for this dir.

Specified by:

getAvailableBytes in class StorageDirView

Returns:

available bytes for this 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

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.

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