org.apache.flink.runtime.state.changelog

Interface ChangelogStateBackendHandle

All Superinterfaces:

CheckpointBoundKeyedStateHandle, CompositeStateHandle, KeyedStateHandle, Serializable, StateObject

All Known Implementing Classes:

ChangelogStateBackendHandle.ChangelogStateBackendHandleImpl, ChangelogStateBackendLocalHandle

@Internal
public interface ChangelogStateBackendHandle
extends KeyedStateHandle, CheckpointBoundKeyedStateHandle

A handle to ChangelogStateBackend state. Consists of the base and delta parts. Base part references materialized state (e.g. SST files), while delta part references state changes that were not not materialized at the time of the snapshot. Both are potentially empty lists as there can be no state or multiple states (e.g. after rescaling).

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	ChangelogStateBackendHandle.ChangelogStateBackendHandleImpl

Nested classes/interfaces inherited from interface org.apache.flink.runtime.state.StateObject

StateObject.StateObjectLocation, StateObject.StateObjectSizeStatsCollector

Method Summary

Modifier and Type	Method and Description
long	getMaterializationID()
List<KeyedStateHandle>	getMaterializedStateHandles()
List<ChangelogStateHandle>	getNonMaterializedStateHandles()
ChangelogStateBackendHandle	rebound(long checkpointId) Returns a new CheckpointBoundKeyedStateHandle Rebounding checkpoint id to a specific checkpoint id.

Methods inherited from interface org.apache.flink.runtime.state.CheckpointBoundKeyedStateHandle

getCheckpointId

Methods inherited from interface org.apache.flink.runtime.state.KeyedStateHandle

getIntersection, getKeyGroupRange, getStateHandleId

Methods inherited from interface org.apache.flink.runtime.state.CompositeStateHandle

getCheckpointedSize, registerSharedStates

Methods inherited from interface org.apache.flink.runtime.state.StateObject

collectSizeStats, discardState, getStateSize

Method Detail

getMaterializedStateHandles

List<KeyedStateHandle> getMaterializedStateHandles()

getNonMaterializedStateHandles

List<ChangelogStateHandle> getNonMaterializedStateHandles()

getMaterializationID

long getMaterializationID()

rebound

ChangelogStateBackendHandle rebound(long checkpointId)

Description copied from interface: CheckpointBoundKeyedStateHandle

Returns a new CheckpointBoundKeyedStateHandle Rebounding checkpoint id to a specific checkpoint id.

Specified by:

rebound in interface CheckpointBoundKeyedStateHandle

Parameters:

checkpointId - rebounded checkpoint id.