Package org.apache.flink.runtime.state.filemerging

Class EmptyFileMergingOperatorStreamStateHandle

java.lang.Object

org.apache.flink.runtime.state.OperatorStreamStateHandle

org.apache.flink.runtime.state.filemerging.FileMergingOperatorStreamStateHandle

org.apache.flink.runtime.state.filemerging.EmptyFileMergingOperatorStreamStateHandle

All Implemented Interfaces:

Serializable, CompositeStateHandle, OperatorStateHandle, StateObject, StreamStateHandle

public class EmptyFileMergingOperatorStreamStateHandle
extends FileMergingOperatorStreamStateHandle

An empty FileMergingOperatorStreamStateHandle that is only used as a placeholder to prevent file merging directory from being deleted.

See Also:

Serialized Form

Nested Class Summary

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

OperatorStateHandle.Mode, OperatorStateHandle.StateMetaInfo

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

StateObject.StateObjectLocation, StateObject.StateObjectSizeStatsCollector

Constructor Summary

Constructors

Constructor	Description
EmptyFileMergingOperatorStreamStateHandle(DirectoryStreamStateHandle taskOwnedDirHandle, DirectoryStreamStateHandle sharedDirHandle, Map<String,OperatorStateHandle.StateMetaInfo> stateNameToPartitionOffsets, StreamStateHandle delegateStateHandle)

Method Summary

Modifier and Type	Method	Description
static EmptyFileMergingOperatorStreamStateHandle	create(DirectoryStreamStateHandle taskownedDirHandle, DirectoryStreamStateHandle sharedDirHandle)	Create an empty EmptyFileMergingOperatorStreamStateHandle.

Methods inherited from class org.apache.flink.runtime.state.filemerging.FileMergingOperatorStreamStateHandle

discardState, equals, getCheckpointedSize, getSharedDirHandle, getTaskOwnedDirHandle, hashCode, registerSharedStates, toString

Methods inherited from class org.apache.flink.runtime.state.OperatorStreamStateHandle

asBytesIfInMemory, collectSizeStats, getDelegateStateHandle, getStateNameToPartitionOffsets, getStateSize, getStreamStateHandleID, maybeGetPath, openInputStream

Methods inherited from class java.lang.Object

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

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

collectSizeStats, getStateSize

Constructor Detail

EmptyFileMergingOperatorStreamStateHandle

public EmptyFileMergingOperatorStreamStateHandle(DirectoryStreamStateHandle taskOwnedDirHandle,
                                                 DirectoryStreamStateHandle sharedDirHandle,
                                                 Map<String,OperatorStateHandle.StateMetaInfo> stateNameToPartitionOffsets,
                                                 StreamStateHandle delegateStateHandle)

Method Detail

create

public static EmptyFileMergingOperatorStreamStateHandle create(DirectoryStreamStateHandle taskownedDirHandle,
                                                               DirectoryStreamStateHandle sharedDirHandle)

Create an empty EmptyFileMergingOperatorStreamStateHandle.

Parameters:

taskownedDirHandle - the directory where operator state is stored.

sharedDirHandle - the directory where shared state is stored.