Examples of org.apache.hadoop.mapreduce.v2.app.TaskHeartbeatHandler

Package org.apache.hadoop.mapreduce.v2.app

Examples of org.apache.hadoop.mapreduce.v2.app.TaskHeartbeatHandler

org.apache.hadoop.mapreduce.v2.app.job.TaskAttemptStateInternal
This class keeps track of tasks that have already been launched. It determines if a task is alive and running or marks a task as dead if it does not hear from it for a long time.

  private static class KilledDuringCommitTransition implements
      SingleArcTransition<JobImpl, JobEvent> {
    @Override
    public void transition(JobImpl job, JobEvent event) {
      job.setFinishTime();
      job.eventHandler.handle(new CommitterJobAbortEvent(job.jobId,
          job.jobContext,
          org.apache.hadoop.mapreduce.JobStatus.State.KILLED));
    }

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      TaskCompletedTransition {
    @Override
    protected JobStateInternal checkJobAfterTaskCompletion(JobImpl job) {
      if (job.completedTaskCount == job.tasks.size()) {
        job.setFinishTime();
        job.eventHandler.handle(new CommitterJobAbortEvent(job.jobId,
            job.jobContext,
            org.apache.hadoop.mapreduce.JobStatus.State.KILLED));
        return JobStateInternal.KILL_ABORT;
      }
      //return the current state, Job not finished yet

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    public void transition(TaskAttemptImpl taskAttempt, 
        TaskAttemptEvent event) {
      TaskAttemptContext taskContext =
        new TaskAttemptContextImpl(taskAttempt.conf,
            TypeConverter.fromYarn(taskAttempt.attemptId));
      taskAttempt.eventHandler.handle(new CommitterTaskAbortEvent(
          taskAttempt.attemptId, taskContext));
    }

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          throw new YarnRuntimeException(EXCEPTIONMSG);
        }
      };
    JobEvent mockJobEvent = mock(JobEvent.class);


    JobStateInternal jobSI = initTransition.transition(job, mockJobEvent);
    Assert.assertTrue("When init fails, return value from InitTransition.transition should equal NEW.",
                      jobSI.equals(JobStateInternal.NEW));
    Assert.assertTrue("Job diagnostics should contain YarnRuntimeException",
                      job.getDiagnostics().toString().contains("YarnRuntimeException"));
    Assert.assertTrue("Job diagnostics should contain " + EXCEPTIONMSG,
                      job.getDiagnostics().toString().contains(EXCEPTIONMSG));
  }

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    conf.setBoolean(MRJobConfig.JOB_UBERTASK_ENABLE, false);
    Job job = app.submit(conf);
    app.waitForState(job, JobState.FAILED);
    Map<TaskId,Task> tasks = job.getTasks();
    Assert.assertEquals("Num tasks is not correct", 1, tasks.size());
    Task task = tasks.values().iterator().next();
    Assert.assertEquals("Task state not correct", TaskState.FAILED,
        task.getReport().getTaskState());
    Map<TaskAttemptId, TaskAttempt> attempts =
        tasks.values().iterator().next().getAttempts();
    Assert.assertEquals("Num attempts is not correct", maxAttempts,
        attempts.size());
    for (TaskAttempt attempt : attempts.values()) {

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    conf.setBoolean(MRJobConfig.JOB_UBERTASK_ENABLE, false);
    Job job = app.submit(conf);
    app.waitForState(job, JobState.RUNNING);
    Map<TaskId, Task> tasks = job.getTasks();
    Assert.assertEquals("Num tasks is not correct", 1, tasks.size());
    Task task = tasks.values().iterator().next();
    app.waitForState(task, TaskState.SCHEDULED);
    Map<TaskAttemptId, TaskAttempt> attempts = tasks.values().iterator()
        .next().getAttempts();
    Assert.assertEquals("Num attempts is not correct", maxAttempts, attempts
        .size());

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    @Override
    public JobStateInternal transition(JobImpl job, JobEvent event) {
      job.completedTaskCount++;
      LOG.info("Num completed Tasks: " + job.completedTaskCount);
      JobTaskEvent taskEvent = (JobTaskEvent) event;
      Task task = job.tasks.get(taskEvent.getTaskID());
      if (taskEvent.getState() == TaskState.SUCCEEDED) {
        taskSucceeded(job, task);
      } else if (taskEvent.getState() == TaskState.FAILED) {
        taskFailed(job, task);
      } else if (taskEvent.getState() == TaskState.KILLED) {

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    app.waitForState(task, TaskState.SCHEDULED);
    Map<TaskAttemptId, TaskAttempt> attempts = tasks.values().iterator()
        .next().getAttempts();
    Assert.assertEquals("Num attempts is not correct", maxAttempts, attempts
        .size());
    TaskAttempt attempt = attempts.values().iterator().next();
    app.waitForInternalState((TaskAttemptImpl) attempt,
        TaskAttemptStateInternal.ASSIGNED);
    app.getDispatcher().getEventHandler().handle(
        new TaskAttemptEvent(attempt.getID(),
            TaskAttemptEventType.TA_CONTAINER_COMPLETED));
    app.waitForState(job, JobState.FAILED);
  }

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      LOG.debug("Processing " + event.getTaskAttemptID() + " of type "
          + event.getType());
    }
    writeLock.lock();
    try {
      final TaskAttemptStateInternal oldState = getInternalState()  ;
      try {
        stateMachine.doTransition(event.getType(), event);
      } catch (InvalidStateTransitonException e) {
        LOG.error("Can't handle this event at current state for "
            + this.attemptId, e);

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        recoveredState = TaskAttemptState.KILLED.toString();
        needToClean = true;
      }
    }


    TaskAttemptStateInternal attemptState;
    if (TaskAttemptState.SUCCEEDED.toString().equals(recoveredState)) {
      attemptState = TaskAttemptStateInternal.SUCCEEDED;
      reportedStatus.taskState = TaskAttemptState.SUCCEEDED;
      eventHandler.handle(createJobCounterUpdateEventTASucceeded(this));
      logAttemptFinishedEvent(attemptState);

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