org.infinispan.client.hotrod.impl.consistenthash

Class ConsistentHashV2

java.lang.Object

org.infinispan.client.hotrod.impl.consistenthash.ConsistentHashV2

All Implemented Interfaces:

ConsistentHash

public class ConsistentHashV2
extends Object
implements ConsistentHash

Version 2 of the ConsistentHash function. Uses MurmurHash3.

Since:

5.0

Author:

manik

See Also:

MurmurHash3

Field Summary

Fields

Modifier and Type	Field and Description
protected Hash	hash

Constructor Summary

Constructors

Constructor and Description
ConsistentHashV2()
ConsistentHashV2(Random rnd)

Method Summary

Modifier and Type	Method and Description
int	getNormalizedHash(Object object) Computes hash code of a given object, and then normalizes it to ensure a positive value is always returned.
Map<SocketAddress,Set<Integer>>	getPrimarySegmentsByServer()
Map<SocketAddress,Set<Integer>>	getSegmentsByServer()
SocketAddress	getServer(Object key)
void	init(Map<SocketAddress,Set<Integer>> servers2Hash, int numKeyOwners, int hashSpace)
void	setHash(Hash hash)

Methods inherited from class java.lang.Object

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

Field Detail

hash

protected Hash hash

Constructor Detail

ConsistentHashV2

public ConsistentHashV2(Random rnd)

ConsistentHashV2

public ConsistentHashV2()

Method Detail

init

public void init(Map<SocketAddress,Set<Integer>> servers2Hash,
                 int numKeyOwners,
                 int hashSpace)

Specified by:

init in interface ConsistentHash

getServer

public SocketAddress getServer(Object key)

Specified by:

getServer in interface ConsistentHash

setHash

public void setHash(Hash hash)

getNormalizedHash

public final int getNormalizedHash(Object object)

Description copied from interface: ConsistentHash

Computes hash code of a given object, and then normalizes it to ensure a positive value is always returned.

Specified by:

getNormalizedHash in interface ConsistentHash

Parameters:

object - to hash

Returns:

a non-null, non-negative normalized hash code for a given object

getSegmentsByServer

public Map<SocketAddress,Set<Integer>> getSegmentsByServer()

Specified by:

getSegmentsByServer in interface ConsistentHash

getPrimarySegmentsByServer

public Map<SocketAddress,Set<Integer>> getPrimarySegmentsByServer()

Specified by:

getPrimarySegmentsByServer in interface ConsistentHash