org.infinispan.configuration.cache

Class StateTransferConfiguration

java.lang.Object

org.infinispan.configuration.cache.StateTransferConfiguration

All Implemented Interfaces:

Matchable<StateTransferConfiguration>

public class StateTransferConfiguration
extends Object
implements Matchable<StateTransferConfiguration>

Configures how state is retrieved when a new cache joins the cluster. Used with invalidation and replication clustered modes.

Since:

5.1

Field Summary

Fields

Modifier and Type	Field and Description
static AttributeDefinition<Boolean>	AWAIT_INITIAL_TRANSFER
static AttributeDefinition<Integer>	CHUNK_SIZE
static AttributeDefinition<Boolean>	FETCH_IN_MEMORY_STATE
static AttributeDefinition<Long>	TIMEOUT

Method Summary

Modifier and Type	Method and Description
AttributeSet	attributes()
boolean	awaitInitialTransfer() If true, this will cause the first call to method CacheManager.getCache() on the joiner node to block and wait until the joining is complete and the cache has finished receiving state from neighboring caches (if fetchInMemoryState is enabled).
int	chunkSize() The state will be transferred in batches of chunkSize cache entries.
boolean	equals(Object obj)
boolean	fetchInMemoryState() If true, the cache will fetch data from the neighboring caches when it starts up, so the cache starts 'warm', although it will impact startup time.
int	hashCode()
long	timeout() This is the maximum amount of time - in milliseconds - to wait for state from neighboring caches, before throwing an exception and aborting startup.
StateTransferConfiguration	timeout(long l) This is the maximum amount of time - in milliseconds - to wait for state from neighboring caches, before throwing an exception and aborting startup.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.infinispan.commons.configuration.attributes.Matchable

matches

Field Detail

AWAIT_INITIAL_TRANSFER

public static final AttributeDefinition<Boolean> AWAIT_INITIAL_TRANSFER

FETCH_IN_MEMORY_STATE

public static final AttributeDefinition<Boolean> FETCH_IN_MEMORY_STATE

TIMEOUT

public static final AttributeDefinition<Long> TIMEOUT

CHUNK_SIZE

public static final AttributeDefinition<Integer> CHUNK_SIZE

Method Detail

fetchInMemoryState

public boolean fetchInMemoryState()

If true, the cache will fetch data from the neighboring caches when it starts up, so the cache starts 'warm', although it will impact startup time.

In distributed mode, state is transferred between running caches as well, as the ownership of keys changes (e.g. because a cache left the cluster). Disabling this setting means a key will sometimes have less than numOwner owners.

timeout

public long timeout()

This is the maximum amount of time - in milliseconds - to wait for state from neighboring caches, before throwing an exception and aborting startup.

timeout

public StateTransferConfiguration timeout(long l)

This is the maximum amount of time - in milliseconds - to wait for state from neighboring caches, before throwing an exception and aborting startup.

chunkSize

public int chunkSize()

The state will be transferred in batches of chunkSize cache entries. If chunkSize is equal to Integer.MAX_VALUE, the state will be transferred in all at once. Not recommended.

awaitInitialTransfer

public boolean awaitInitialTransfer()

If true, this will cause the first call to method CacheManager.getCache() on the joiner node to block and wait until the joining is complete and the cache has finished receiving state from neighboring caches (if fetchInMemoryState is enabled). This option applies to distributed and replicated caches only and is enabled by default. Please note that setting this to false will make the cache object available immediately but any access to keys that should be available locally but are not yet transferred will actually cause a (transparent) remote access. While this will not have any impact on the logic of your application it might impact performance.

attributes

public AttributeSet attributes()

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object