org.apache.flink.runtime.io.network.api

Class EndOfData

java.lang.Object

org.apache.flink.runtime.event.AbstractEvent

org.apache.flink.runtime.event.RuntimeEvent

org.apache.flink.runtime.io.network.api.EndOfData

All Implemented Interfaces:

org.apache.flink.core.io.IOReadableWritable

public class EndOfData
extends RuntimeEvent

This event indicates there will be no more data records in a subpartition. There still might be other events, in particular CheckpointBarriers traveling. The EndOfData is acknowledged by the downstream task. That way we can safely assume the downstream task has consumed all the produced records and therefore we can perform a final checkpoint for the upstream task.

See Also:

FLIP-147

Field Summary

Fields

Modifier and Type	Field and Description
static EndOfData	INSTANCE The singleton instance of this event.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
int	hashCode()
void	read(org.apache.flink.core.memory.DataInputView in)
String	toString()
void	write(org.apache.flink.core.memory.DataOutputView out)

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final EndOfData INSTANCE

The singleton instance of this event.

Method Detail

write

public void write(org.apache.flink.core.memory.DataOutputView out)
           throws IOException

Throws:

IOException

read

public void read(org.apache.flink.core.memory.DataInputView in)
          throws IOException

Throws:

IOException

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object