org.apache.flink.runtime.executiongraph

Class StatusListenerMessenger

java.lang.Object

org.apache.flink.runtime.executiongraph.StatusListenerMessenger

All Implemented Interfaces:

ExecutionStatusListener, JobStatusListener

public class StatusListenerMessenger
extends Object
implements JobStatusListener, ExecutionStatusListener

A JobStatusListener and ExecutionStatusListener that sends an actor message for each status change.

Constructor Summary

Constructors

Constructor and Description
StatusListenerMessenger(akka.actor.ActorRef target, UUID leaderSessionId)

Method Summary

Modifier and Type	Method and Description
void	executionStatusChanged(JobID jobID, JobVertexID vertexID, String taskName, int taskParallelism, int subtaskIndex, ExecutionAttemptID executionID, ExecutionState newExecutionState, long timestamp, String optionalMessage) Called whenever the execution status of a task changes.
void	jobStatusChanges(JobID jobId, JobStatus newJobStatus, long timestamp, Throwable error) This method is called whenever the status of the job changes.

Methods inherited from class java.lang.Object

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

Constructor Detail

StatusListenerMessenger

public StatusListenerMessenger(akka.actor.ActorRef target,
                               UUID leaderSessionId)

Method Detail

jobStatusChanges

public void jobStatusChanges(JobID jobId,
                             JobStatus newJobStatus,
                             long timestamp,
                             Throwable error)

Description copied from interface: JobStatusListener

This method is called whenever the status of the job changes.

Specified by:

jobStatusChanges in interface JobStatusListener

Parameters:

jobId - The ID of the job.

newJobStatus - The status the job switched to.

timestamp - The timestamp when the status transition occurred.

error - In case the job status switches to a failure state, this is the exception that caused the failure.

executionStatusChanged

public void executionStatusChanged(JobID jobID,
                                   JobVertexID vertexID,
                                   String taskName,
                                   int taskParallelism,
                                   int subtaskIndex,
                                   ExecutionAttemptID executionID,
                                   ExecutionState newExecutionState,
                                   long timestamp,
                                   String optionalMessage)

Description copied from interface: ExecutionStatusListener

Called whenever the execution status of a task changes.

Specified by:

executionStatusChanged in interface ExecutionStatusListener

Parameters:

jobID - The ID of the job

vertexID - The ID of the task vertex

taskName - The name of the task

taskParallelism - The parallelism of the task

subtaskIndex - The subtask's parallel index

executionID - The ID of the execution attempt

newExecutionState - The status to which the task switched

timestamp - The timestamp when the change occurred. Informational only.

optionalMessage - An optional message attached to the status change, like an exception message.