org.apache.flink.state.changelog

类 ChangelogStateFactory

java.lang.Object

org.apache.flink.state.changelog.ChangelogStateFactory

public class ChangelogStateFactory
extends Object

Maintains the lifecycle of all ChangelogStates.

构造器概要

构造器

构造器和说明
ChangelogStateFactory()

方法概要

限定符和类型	方法和说明
<K,N,V,S extends org.apache.flink.api.common.state.State> ChangelogState	create(org.apache.flink.api.common.state.StateDescriptor<S,V> stateDescriptor, org.apache.flink.runtime.state.internal.InternalKvState<K,N,V> internalKvState, KvStateChangeLogger<V,N> kvStateChangeLogger, org.apache.flink.runtime.state.heap.InternalKeyContext<K> keyContext)
<T> ChangelogKeyGroupedPriorityQueue<T>	create(String stateName, org.apache.flink.runtime.state.KeyGroupedInternalPriorityQueue<T> internalPriorityQueue, StateChangeLogger<T,Void> logger, org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer)
void	dispose()
ChangelogState	getExistingState(String name, org.apache.flink.runtime.state.metainfo.StateMetaInfoSnapshot.BackendStateType type)
void	resetAllWritingMetaFlags()

从类继承的方法 java.lang.Object

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

构造器详细资料

ChangelogStateFactory

public ChangelogStateFactory()

方法详细资料

create

public <K,N,V,S extends org.apache.flink.api.common.state.State> ChangelogState create(org.apache.flink.api.common.state.StateDescriptor<S,V> stateDescriptor,
                                                                                       org.apache.flink.runtime.state.internal.InternalKvState<K,N,V> internalKvState,
                                                                                       KvStateChangeLogger<V,N> kvStateChangeLogger,
                                                                                       org.apache.flink.runtime.state.heap.InternalKeyContext<K> keyContext)
                                                                                throws Exception

抛出:

Exception

create

public <T> ChangelogKeyGroupedPriorityQueue<T> create(String stateName,
                                                      org.apache.flink.runtime.state.KeyGroupedInternalPriorityQueue<T> internalPriorityQueue,
                                                      StateChangeLogger<T,Void> logger,
                                                      org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer)

getExistingState

public ChangelogState getExistingState(String name,
                                       org.apache.flink.runtime.state.metainfo.StateMetaInfoSnapshot.BackendStateType type)
                                throws UnsupportedOperationException

参数:

name - state name

type - state type (the only supported type currently are: key value, priority queue)

返回:

an existing state, i.e. the one that was already created. The returned state will not apply TTL to the passed values, regardless of the TTL settings. This prevents double applying of TTL (recovered values are TTL values if TTL was enabled). The state will, however, use TTL serializer if TTL is enabled. WARN: only valid during the recovery.

抛出:

UnsupportedOperationException - if state type is not supported

resetAllWritingMetaFlags

public void resetAllWritingMetaFlags()

dispose

public void dispose()