org.apache.flink.runtime.state.filemerging

Class EmptySegmentFileStateHandle

java.lang.Object

org.apache.flink.runtime.state.filemerging.SegmentFileStateHandle

org.apache.flink.runtime.state.filemerging.EmptySegmentFileStateHandle

All Implemented Interfaces:

Serializable, StateObject, StreamStateHandle

public class EmptySegmentFileStateHandle
extends SegmentFileStateHandle

An empty SegmentFileStateHandle that is only used as a placeholder.

See Also:

Serialized Form

Nested Class Summary

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

StateObject.StateObjectLocation, StateObject.StateObjectSizeStatsCollector

Field Summary

Fields

Modifier and Type	Field and Description
static EmptySegmentFileStateHandle	INSTANCE

Fields inherited from class org.apache.flink.runtime.state.filemerging.SegmentFileStateHandle

stateSize

Method Summary

Modifier and Type	Method and Description
org.apache.flink.core.fs.FSDataInputStream	openInputStream() Returns an FSDataInputStream that can be used to read back the data that was previously written to the stream.

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

asBytesIfInMemory, collectSizeStats, discardState, equals, getFilePath, getLogicalFileId, getScope, getStartPos, getStateSize, getStreamStateHandleID, hashCode, toString

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final EmptySegmentFileStateHandle INSTANCE

Method Detail

openInputStream

public org.apache.flink.core.fs.FSDataInputStream openInputStream()
                                                           throws IOException

Description copied from interface: StreamStateHandle

Returns an FSDataInputStream that can be used to read back the data that was previously written to the stream.

Specified by:

openInputStream in interface StreamStateHandle

Overrides:

openInputStream in class SegmentFileStateHandle

Throws:

IOException