org.apache.flink.runtime.io.network

Class TaskEventDispatcher

java.lang.Object

org.apache.flink.runtime.io.network.TaskEventDispatcher

public class TaskEventDispatcher
extends Object

The task event dispatcher dispatches events flowing backwards from a consuming task to the task producing the consumed result.

Backwards events only work for tasks, which produce pipelined results, where both the producing and consuming task are running at the same time.

Constructor Summary

Constructors

Constructor and Description
TaskEventDispatcher()

Method Summary

Modifier and Type	Method and Description
void	clearAll()
boolean	publish(ResultPartitionID partitionId, TaskEvent event) Publishes the event to the registered ResultPartitionWriter instances.
void	registerWriterForIncomingTaskEvents(ResultPartitionID partitionId, ResultPartitionWriter writer)
void	unregisterWriter(ResultPartitionWriter writer)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TaskEventDispatcher

public TaskEventDispatcher()

Method Detail

registerWriterForIncomingTaskEvents

public void registerWriterForIncomingTaskEvents(ResultPartitionID partitionId,
                                                ResultPartitionWriter writer)

unregisterWriter

public void unregisterWriter(ResultPartitionWriter writer)

publish

public boolean publish(ResultPartitionID partitionId,
                       TaskEvent event)

Publishes the event to the registered ResultPartitionWriter instances.

This method is either called directly from a LocalInputChannel or the network I/O thread on behalf of a RemoteInputChannel.

clearAll

public void clearAll()