java.lang.Object
- org.infinispan.configuration.cache.HashConfiguration

All Implemented Interfaces:

org.infinispan.commons.configuration.attributes.Matchable<HashConfiguration>, BaseConfigurationInfo, ConfigurationInfo
```
public class HashConfiguration
extends Object
implements org.infinispan.commons.configuration.attributes.Matchable<HashConfiguration>, ConfigurationInfo
```
Allows fine-tuning of rehashing characteristics. Must only used with 'distributed' cache mode.

Author:

pmuir

Field Summary

Fields
Modifier and Type	Field	Description
`static org.infinispan.commons.configuration.attributes.AttributeDefinition<Float>`	`CAPACITY_FACTOR`
`static org.infinispan.commons.configuration.attributes.AttributeDefinition<ConsistentHashFactory>`	`CONSISTENT_HASH_FACTORY`
`static org.infinispan.commons.configuration.elements.ElementDefinition`	`ELEMENT_DEFINITION`
`static org.infinispan.commons.configuration.attributes.AttributeDefinition<KeyPartitioner>`	`KEY_PARTITIONER`
`static org.infinispan.commons.configuration.attributes.AttributeDefinition<Integer>`	`NUM_OWNERS`
`static org.infinispan.commons.configuration.attributes.AttributeDefinition<Integer>`	`NUM_SEGMENTS`

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`org.infinispan.commons.configuration.attributes.AttributeSet`	`attributes()`
`float`	`capacityFactor()`	Controls the proportion of entries that will reside on the local node, compared to the other nodes in the cluster.
`ConsistentHashFactory<?>`	`consistentHashFactory()`	Deprecated. Since 11.0.
`boolean`	`equals(Object obj)`
`org.infinispan.commons.configuration.elements.ElementDefinition`	`getElementDefinition()`
`GroupsConfiguration`	`groups()`	Configuration for various grouper definitions.
`int`	`hashCode()`
`KeyPartitioner`	`keyPartitioner()`
`boolean`	`matches(HashConfiguration other)`
`int`	`numOwners()`	Number of cluster-wide replicas for each cache entry.
`int`	`numSegments()`	Controls the total number of hash space segments (per cluster).
`List<ConfigurationInfo>`	`subElements()`
`String`	`toString()`

- Field Detail
  - CONSISTENT_HASH_FACTORY
```
public static final org.infinispan.commons.configuration.attributes.AttributeDefinition<ConsistentHashFactory> CONSISTENT_HASH_FACTORY
```
  - NUM_OWNERS
```
public static final org.infinispan.commons.configuration.attributes.AttributeDefinition<Integer> NUM_OWNERS
```
  - NUM_SEGMENTS
```
public static final org.infinispan.commons.configuration.attributes.AttributeDefinition<Integer> NUM_SEGMENTS
```
  - CAPACITY_FACTOR
```
public static final org.infinispan.commons.configuration.attributes.AttributeDefinition<Float> CAPACITY_FACTOR
```
  - KEY_PARTITIONER
```
public static final org.infinispan.commons.configuration.attributes.AttributeDefinition<KeyPartitioner> KEY_PARTITIONER
```
  - ELEMENT_DEFINITION
```
public static final org.infinispan.commons.configuration.elements.ElementDefinition ELEMENT_DEFINITION
```
- Method Detail
  - consistentHashFactory
```
@Deprecated
public ConsistentHashFactory<?> consistentHashFactory()
```
    Deprecated.
    Since 11.0. Will be removed in 14.0, the segment allocation will no longer be customizable.
    
    The consistent hash factory in use.
  - numOwners
```
public int numOwners()
```
    Number of cluster-wide replicas for each cache entry.
  - numSegments
```
public int numSegments()
```
    Controls the total number of hash space segments (per cluster).
    A hash space segment is the granularity for key distribution in the cluster: a node can own (or primary-own) one or more full segments, but not a fraction of a segment. As such, very small numSegments values (< 10 segments per node) will make the distribution of keys between nodes more uneven.
    
    The recommended value is 20 * the expected cluster size.
    
    Note: The value returned by ConsistentHash.getNumSegments() may be different, e.g. rounded up to a power of 2.
  - capacityFactor
```
public float capacityFactor()
```
    Controls the proportion of entries that will reside on the local node, compared to the other nodes in the cluster. This is just a suggestion, there is no guarantee that a node with a capacity factor of 2 will have twice as many entries as a node with a capacity factor of 1.
  - keyPartitioner
```
public KeyPartitioner keyPartitioner()
```
  - groups
```
public GroupsConfiguration groups()
```
    Configuration for various grouper definitions. See the user guide for more information.
  - attributes
```
public org.infinispan.commons.configuration.attributes.AttributeSet attributes()
```
    Specified by:
    
    attributes in interface BaseConfigurationInfo
    
    Returns:
    
    the AttributeSet declared by the configuration.
  - getElementDefinition
```
public org.infinispan.commons.configuration.elements.ElementDefinition getElementDefinition()
```
    Specified by:
    
    getElementDefinition in interface BaseConfigurationInfo
    
    Returns:
    
    the ElementDefinition of the configuration.
  - subElements
```
public List<ConfigurationInfo> subElements()
```
    Specified by:
    
    subElements in interface ConfigurationInfo
    
    Returns:
    
    the list of sub elements.
  - toString
```
public String toString()
```
  - equals
```
public boolean equals(Object obj)
```
  - hashCode
```
public int hashCode()
```
  - matches
```
public boolean matches(HashConfiguration other)
```

Class HashConfiguration

Field Summary

Method Summary

Field Detail

CONSISTENT_HASH_FACTORY

NUM_OWNERS

NUM_SEGMENTS

CAPACITY_FACTOR

KEY_PARTITIONER

ELEMENT_DEFINITION

Method Detail

consistentHashFactory

numOwners

numSegments

capacityFactor

keyPartitioner

groups

attributes

getElementDefinition

subElements

toString

equals

hashCode

matches