org.apache.tez.dag.app.dag

Class StateChangeNotifier

java.lang.Object

org.apache.tez.dag.app.dag.StateChangeNotifier

@InterfaceAudience.Private
public class StateChangeNotifier
extends Object

Tracks status updates from various components, and informs registered components about updates.

Constructor Summary

Constructors

Constructor and Description
StateChangeNotifier(DAG dag)

Method Summary

Modifier and Type	Method and Description
protected void	addedEventToQueue()
protected void	processedEventFromQueue()
void	registerForTaskSuccessUpdates(String vertexName, TaskStateUpdateListener listener)
void	registerForVertexUpdates(String vertexName, Set<org.apache.tez.dag.api.event.VertexState> stateSet, VertexStateUpdateListener listener)
void	stateChanged(org.apache.tez.dag.records.TezVertexID vertexId, org.apache.tez.dag.api.event.VertexStateUpdate vertexStateUpdate)
void	stop()
void	taskSucceeded(String vertexName, org.apache.tez.dag.records.TezTaskID taskId, int attemptId)
void	unregisterForTaskSuccessUpdates(String vertexName, TaskStateUpdateListener listener)
void	unregisterForVertexUpdates(String vertexName, VertexStateUpdateListener listener)

Methods inherited from class java.lang.Object

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

Constructor Detail

StateChangeNotifier

public StateChangeNotifier(DAG dag)

Method Detail

processedEventFromQueue

protected void processedEventFromQueue()

addedEventToQueue

protected void addedEventToQueue()

stop

public void stop()

registerForVertexUpdates

public void registerForVertexUpdates(String vertexName,
                                     Set<org.apache.tez.dag.api.event.VertexState> stateSet,
                                     VertexStateUpdateListener listener)

unregisterForVertexUpdates

public void unregisterForVertexUpdates(String vertexName,
                                       VertexStateUpdateListener listener)

stateChanged

public void stateChanged(org.apache.tez.dag.records.TezVertexID vertexId,
                         org.apache.tez.dag.api.event.VertexStateUpdate vertexStateUpdate)

registerForTaskSuccessUpdates

public void registerForTaskSuccessUpdates(String vertexName,
                                          TaskStateUpdateListener listener)

unregisterForTaskSuccessUpdates

public void unregisterForTaskSuccessUpdates(String vertexName,
                                            TaskStateUpdateListener listener)

taskSucceeded

public void taskSucceeded(String vertexName,
                          org.apache.tez.dag.records.TezTaskID taskId,
                          int attemptId)