alluxio.worker.block.meta

Class StorageDirView

java.lang.Object

alluxio.worker.block.meta.StorageDirView

Direct Known Subclasses:

StorageDirAllocatorView, StorageDirEvictorView

public abstract class StorageDirView
extends Object

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

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
TempBlockMeta	createTempBlockMeta(long sessionId, long blockId, long initialBlockSize) Creates a TempBlockMeta given sessionId, blockId, and initialBlockSize.
abstract 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.
String	getMediumType() Get medium type of the dir view, which is derived from the dir.
StorageTierView	getParentTierView()
long	getReservedBytes()
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)

Creates a StorageDirView using the actual StorageDir.

Parameters:

dir - which the dirView is constructed from

tierView - which the dirView is under

Method Detail

getAvailableBytes

public abstract long getAvailableBytes()

Gets available bytes for this dir.

Returns:

available bytes for this dir

getReservedBytes

public long getReservedBytes()

Returns:

the amount of bytes reserved for internal management

getDirViewIndex

public int getDirViewIndex()

Gets the index of this Dir.

Returns:

index of the dir

getCapacityBytes

public long getCapacityBytes()

Gets capacity bytes for this dir.

Returns:

capacity 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

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

getMediumType

public String getMediumType()

Get medium type of the dir view, which is derived from the dir.

Returns:

the medium type

toBlockStoreLocation

public BlockStoreLocation toBlockStoreLocation()

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

Returns:

BlockStoreLocation created