alluxio.client.file.cache.allocator

Class AffinityHashAllocator

java.lang.Object

alluxio.client.file.cache.allocator.HashAllocator

alluxio.client.file.cache.allocator.AffinityHashAllocator

All Implemented Interfaces:

Allocator

public class AffinityHashAllocator
extends HashAllocator

Offers stickiness allocation based on the file id.

Field Summary

Fields inherited from class alluxio.client.file.cache.allocator.HashAllocator

mDirs

Constructor Summary

Constructors

Constructor and Description
AffinityHashAllocator(java.util.List<PageStoreDir> dirs)
AffinityHashAllocator(java.util.List<PageStoreDir> dirs, java.util.function.Function<java.lang.String,java.lang.Integer> hashFunction)

Method Summary

Modifier and Type	Method and Description
PageStoreDir	allocate(java.lang.String fileId, long fileLength)

Methods inherited from class java.lang.Object

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

Constructor Detail

AffinityHashAllocator

public AffinityHashAllocator(java.util.List<PageStoreDir> dirs)

Parameters:

dirs - page store directories

AffinityHashAllocator

public AffinityHashAllocator(java.util.List<PageStoreDir> dirs,
                             java.util.function.Function<java.lang.String,java.lang.Integer> hashFunction)

Parameters:

dirs - page store directories

hashFunction - hash function

Method Detail

allocate

public PageStoreDir allocate(java.lang.String fileId,
                             long fileLength)

Specified by:

allocate in interface Allocator

Overrides:

allocate in class HashAllocator

Returns:

the storage directory