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

类 EndOfData

java.lang.Object

org.apache.flink.runtime.event.AbstractEvent

org.apache.flink.runtime.event.RuntimeEvent

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

所有已实现的接口:

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.

另请参阅:

FLIP-147

字段概要

字段

限定符和类型	字段和说明
static EndOfData	INSTANCE The singleton instance of this event.

方法概要

限定符和类型	方法和说明
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)

从类继承的方法 java.lang.Object

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

字段详细资料

INSTANCE

public static final EndOfData INSTANCE

The singleton instance of this event.

方法详细资料

write

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

抛出:

IOException

read

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

抛出:

IOException

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

equals

public boolean equals(Object obj)

覆盖:

equals 在类中 Object

toString

public String toString()

覆盖:

toString 在类中 Object