Package org.infinispan.hotrod.impl.consistenthash

Class ConsistentHashV2

java.lang.Object

org.infinispan.hotrod.impl.consistenthash.ConsistentHashV2

All Implemented Interfaces:

ConsistentHash

Direct Known Subclasses:

CRC16ConsistentHashV2

public class ConsistentHashV2
extends Object
implements ConsistentHash

Version 2 of the ConsistentHash function. Uses MurmurHash3.

Since:

14.0

See Also:

• MurmurHash3

Field Summary

Fields

Modifier and Type	Field	Description
protected final org.infinispan.commons.hash.Hash	hash

Fields inherited from interface org.infinispan.hotrod.impl.consistenthash.ConsistentHash

DEFAULT

Constructor Summary

Constructors

Constructor	Description
ConsistentHashV2(Random rnd)
ConsistentHashV2(Random rnd, org.infinispan.commons.hash.Hash hash)

Method Summary

Modifier and Type	Method	Description
final 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)

Methods inherited from class java.lang.Object

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

Field Details

hash

protected final org.infinispan.commons.hash.Hash hash

Constructor Details

ConsistentHashV2

public ConsistentHashV2(Random rnd)

ConsistentHashV2

public ConsistentHashV2(Random rnd,
 org.infinispan.commons.hash.Hash hash)

Method Details

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

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