org.apache.flink.runtime.state

类 AbstractIncrementalStateHandle

java.lang.Object

org.apache.flink.runtime.state.AbstractIncrementalStateHandle

所有已实现的接口:

Serializable, CheckpointBoundKeyedStateHandle, CompositeStateHandle, IncrementalKeyedStateHandle, KeyedStateHandle, StateObject

直接已知子类:

IncrementalLocalKeyedStateHandle, IncrementalRemoteKeyedStateHandle

public abstract class AbstractIncrementalStateHandle
extends Object
implements IncrementalKeyedStateHandle

Abstract superclass for all IncrementalKeyedStateHandle.

另请参阅:

序列化表格

嵌套类概要

从接口继承的嵌套类/接口 org.apache.flink.runtime.state.IncrementalKeyedStateHandle

IncrementalKeyedStateHandle.HandleAndLocalPath

从接口继承的嵌套类/接口 org.apache.flink.runtime.state.StateObject

StateObject.StateObjectLocation, StateObject.StateObjectSizeStatsCollector

字段概要

字段

限定符和类型	字段和说明
protected UUID	backendIdentifier UUID to identify the backend which created this state handle.
protected long	checkpointId The checkpoint Id.
protected KeyGroupRange	keyGroupRange The key-group range covered by this state handle.
protected StreamStateHandle	metaStateHandle Primary meta data state of the incremental checkpoint.
protected List<IncrementalKeyedStateHandle.HandleAndLocalPath>	sharedState Shared state in the incremental checkpoint.
protected StateHandleID	stateHandleId Unique id for this state handle.

构造器概要

构造器

构造器和说明
AbstractIncrementalStateHandle(UUID backendIdentifier, KeyGroupRange keyGroupRange, long checkpointId, List<IncrementalKeyedStateHandle.HandleAndLocalPath> sharedState, StreamStateHandle metaStateHandle, StateHandleID stateHandleId)

方法概要

限定符和类型	方法和说明
boolean	equals(Object o)
UUID	getBackendIdentifier() Returns the identifier of the state backend from which this handle was created.
long	getCheckpointId() Returns the ID of the checkpoint for which the handle was created or used.
KeyedStateHandle	getIntersection(KeyGroupRange keyGroupRange) Returns a state over a range that is the intersection between this handle's key-group range and the provided key-group range.
KeyGroupRange	getKeyGroupRange() Returns the range of the key groups contained in the state.
StreamStateHandle	getMetaDataStateHandle()
List<IncrementalKeyedStateHandle.HandleAndLocalPath>	getSharedStateHandles() Returns a list of all shared states and the corresponding localPath in the backend at the time this was created.
StateHandleID	getStateHandleId() Returns a unique state handle id to distinguish with other keyed state handles.
int	hashCode()
String	toString()

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.runtime.state.CheckpointBoundKeyedStateHandle

rebound

从接口继承的方法 org.apache.flink.runtime.state.CompositeStateHandle

getCheckpointedSize, registerSharedStates

从接口继承的方法 org.apache.flink.runtime.state.StateObject

collectSizeStats, discardState, getStateSize

字段详细资料

checkpointId

protected final long checkpointId

The checkpoint Id.

backendIdentifier

protected final UUID backendIdentifier

UUID to identify the backend which created this state handle. This is in creating the key for the SharedStateRegistry.

keyGroupRange

protected final KeyGroupRange keyGroupRange

The key-group range covered by this state handle.

sharedState

protected final List<IncrementalKeyedStateHandle.HandleAndLocalPath> sharedState

Shared state in the incremental checkpoint.

metaStateHandle

protected final StreamStateHandle metaStateHandle

Primary meta data state of the incremental checkpoint.

stateHandleId

protected final StateHandleID stateHandleId

Unique id for this state handle.

构造器详细资料

AbstractIncrementalStateHandle

public AbstractIncrementalStateHandle(UUID backendIdentifier,
                                      KeyGroupRange keyGroupRange,
                                      long checkpointId,
                                      List<IncrementalKeyedStateHandle.HandleAndLocalPath> sharedState,
                                      StreamStateHandle metaStateHandle,
                                      StateHandleID stateHandleId)

方法详细资料

getCheckpointId

public long getCheckpointId()

从接口复制的说明: CheckpointBoundKeyedStateHandle

Returns the ID of the checkpoint for which the handle was created or used.

指定者:

getCheckpointId 在接口中 CheckpointBoundKeyedStateHandle

getBackendIdentifier

@Nonnull
public UUID getBackendIdentifier()

从接口复制的说明: IncrementalKeyedStateHandle

Returns the identifier of the state backend from which this handle was created.

指定者:

getBackendIdentifier 在接口中 IncrementalKeyedStateHandle

getKeyGroupRange

public KeyGroupRange getKeyGroupRange()

从接口复制的说明: KeyedStateHandle

Returns the range of the key groups contained in the state.

指定者:

getKeyGroupRange 在接口中 KeyedStateHandle

getSharedStateHandles

@Nonnull
public List<IncrementalKeyedStateHandle.HandleAndLocalPath> getSharedStateHandles()

从接口复制的说明: IncrementalKeyedStateHandle

Returns a list of all shared states and the corresponding localPath in the backend at the time this was created.

指定者:

getSharedStateHandles 在接口中 IncrementalKeyedStateHandle

getMetaDataStateHandle

@Nonnull
public StreamStateHandle getMetaDataStateHandle()

指定者:

getMetaDataStateHandle 在接口中 IncrementalKeyedStateHandle

getStateHandleId

public StateHandleID getStateHandleId()

从接口复制的说明: KeyedStateHandle

Returns a unique state handle id to distinguish with other keyed state handles.

If this state handle would be used as materialized part of ChangelogStateBackendHandle, it should persist this state handle id when serializing of checkpoint and deserialize it back to ensure the state handle id is constant.

指定者:

getStateHandleId 在接口中 KeyedStateHandle

返回:

A unique state handle id.

getIntersection

public KeyedStateHandle getIntersection(KeyGroupRange keyGroupRange)

从接口复制的说明: KeyedStateHandle

Returns a state over a range that is the intersection between this handle's key-group range and the provided key-group range.

指定者:

getIntersection 在接口中 KeyedStateHandle

参数:

keyGroupRange - The key group range to intersect with, will return null if the intersection of this handle's key-group and the provided key-group is empty.

equals

public boolean equals(Object o)

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

toString

public String toString()

覆盖:

toString 在类中 Object