org.apache.flink.state.changelog.restore

类 ChangelogMigrationRestoreTarget<K>

java.lang.Object

org.apache.flink.state.changelog.restore.ChangelogMigrationRestoreTarget<K>

所有已实现的接口:

ChangelogRestoreTarget<K>

public class ChangelogMigrationRestoreTarget<K>
extends Object
implements ChangelogRestoreTarget<K>

A ChangelogRestoreTarget supports to migrate to the delegated keyed state backend.

构造器概要

构造器

构造器和说明
ChangelogMigrationRestoreTarget(org.apache.flink.runtime.state.AbstractKeyedStateBackend<K> keyedStateBackend, ChangelogStateFactory changelogStateFactory)

方法概要

限定符和类型	方法和说明
<N,S extends org.apache.flink.api.common.state.State,V> S	createKeyedState(org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer, org.apache.flink.api.common.state.StateDescriptor<S,V> stateDescriptor) Creates a keyed state which could be retrieved by #getExistingState(String, BackendStateType) in the restore procedure.
<T extends org.apache.flink.runtime.state.heap.HeapPriorityQueueElement & org.apache.flink.runtime.state.PriorityComparable<? super T> & org.apache.flink.runtime.state.Keyed<?>> org.apache.flink.runtime.state.KeyGroupedInternalPriorityQueue<T>	createPqState(String stateName, org.apache.flink.api.common.typeutils.TypeSerializer<T> byteOrderedElementSerializer) Creates a KeyGroupedInternalPriorityQueue which could be retrieved by #getExistingState(String, BackendStateType) in the restore procedure.
ChangelogState	getExistingState(String name, org.apache.flink.runtime.state.metainfo.StateMetaInfoSnapshot.BackendStateType type) Returns the existing state created by ChangelogRestoreTarget.createKeyedState(TypeSerializer, StateDescriptor) or ChangelogRestoreTarget.createPqState(String, TypeSerializer) in the restore procedure.
org.apache.flink.runtime.state.KeyGroupRange	getKeyGroupRange() Returns the key groups which this restore procedure covers.
org.apache.flink.runtime.state.CheckpointableKeyedStateBackend<K>	getRestoredKeyedStateBackend() Returns keyed state backend restored finally.

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

ChangelogMigrationRestoreTarget

public ChangelogMigrationRestoreTarget(org.apache.flink.runtime.state.AbstractKeyedStateBackend<K> keyedStateBackend,
                                       ChangelogStateFactory changelogStateFactory)

方法详细资料

getKeyGroupRange

public org.apache.flink.runtime.state.KeyGroupRange getKeyGroupRange()

从接口复制的说明: ChangelogRestoreTarget

Returns the key groups which this restore procedure covers.

指定者:

getKeyGroupRange 在接口中 ChangelogRestoreTarget<K>

createKeyedState

public <N,S extends org.apache.flink.api.common.state.State,V> S createKeyedState(org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer,
                                                                                  org.apache.flink.api.common.state.StateDescriptor<S,V> stateDescriptor)
                                                                           throws Exception

从接口复制的说明: ChangelogRestoreTarget

Creates a keyed state which could be retrieved by #getExistingState(String, BackendStateType) in the restore procedure. The interface comes from KeyedStateBackend.getOrCreateKeyedState(TypeSerializer, StateDescriptor).

指定者:

createKeyedState 在接口中 ChangelogRestoreTarget<K>

抛出:

Exception

createPqState

@Nonnull
public <T extends org.apache.flink.runtime.state.heap.HeapPriorityQueueElement & org.apache.flink.runtime.state.PriorityComparable<? super T> & org.apache.flink.runtime.state.Keyed<?>> org.apache.flink.runtime.state.KeyGroupedInternalPriorityQueue<T> createPqState(@Nonnull
                                                                                                                                                                                                                                                                                  String stateName,
                                                                                                                                                                                                                                                                                  @Nonnull
                                                                                                                                                                                                                                                                                  org.apache.flink.api.common.typeutils.TypeSerializer<T> byteOrderedElementSerializer)

从接口复制的说明: ChangelogRestoreTarget

Creates a KeyGroupedInternalPriorityQueue which could be retrieved by #getExistingState(String, BackendStateType) in the restore procedure. The interface comes from PriorityQueueSetFactory.create(String, TypeSerializer).

指定者:

createPqState 在接口中 ChangelogRestoreTarget<K>

getExistingState

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

从接口复制的说明: ChangelogRestoreTarget

Returns the existing state created by ChangelogRestoreTarget.createKeyedState(TypeSerializer, StateDescriptor) or ChangelogRestoreTarget.createPqState(String, TypeSerializer) in the restore procedure.

指定者:

getExistingState 在接口中 ChangelogRestoreTarget<K>

getRestoredKeyedStateBackend

public org.apache.flink.runtime.state.CheckpointableKeyedStateBackend<K> getRestoredKeyedStateBackend()

从接口复制的说明: ChangelogRestoreTarget

Returns keyed state backend restored finally.

指定者:

getRestoredKeyedStateBackend 在接口中 ChangelogRestoreTarget<K>