alluxio.worker.block.evictor

Class EvictorUtils

java.lang.Object

alluxio.worker.block.evictor.EvictorUtils

@ThreadSafe
public final class EvictorUtils
extends Object

Utility functions for the evictor package.

Method Summary

Modifier and Type	Method and Description
static StorageDirView	getDirWithMaxFreeSpace(long bytesToBeAvailable, BlockStoreLocation location, BlockMetadataEvictorView metadataView) Gets StorageDirView with max free space.
static StorageDirView	selectDirWithRequestedSpace(long bytesToBeAvailable, BlockStoreLocation location, BlockMetadataEvictorView mManagerView) Finds a directory in the given location range with capacity upwards of the given bound.

Methods inherited from class java.lang.Object

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

Method Detail

getDirWithMaxFreeSpace

public static StorageDirView getDirWithMaxFreeSpace(long bytesToBeAvailable,
                                                    BlockStoreLocation location,
                                                    BlockMetadataEvictorView metadataView)

Gets StorageDirView with max free space.

Parameters:

bytesToBeAvailable - space size to be requested

location - location that the space will be allocated in

metadataView - a view of block metadata information

Returns:

the StorageDirView selected

selectDirWithRequestedSpace

@Nullable
public static StorageDirView selectDirWithRequestedSpace(long bytesToBeAvailable,
                                                                   BlockStoreLocation location,
                                                                   BlockMetadataEvictorView mManagerView)

Finds a directory in the given location range with capacity upwards of the given bound.

Parameters:

bytesToBeAvailable - the capacity bound

location - the location range

mManagerView - the storage manager view

Returns:

a StorageDirView in the range of location that already has availableBytes larger than bytesToBeAvailable, otherwise null