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

Examples of org.apache.hadoop.mapreduce.v2.app.speculate.DefaultSpeculator


    myAppContext = new MyAppContext(MAP_TASKS, REDUCE_TASKS);
    myJob = myAppContext.getAllJobs().values().iterator().next();

    estimator.contextualize(conf, myAppContext);

    speculator = new DefaultSpeculator(conf, myAppContext, estimator, clock);

    dispatcher.register(Speculator.EventType.class, speculator);

    dispatcher.register(TaskEventType.class, new SpeculationRequestEventHandler());
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    myAppContext = new MyAppContext(MAP_TASKS, REDUCE_TASKS);
    myJob = myAppContext.getAllJobs().values().iterator().next();

    estimator.contextualize(conf, myAppContext);

    speculator = new DefaultSpeculator(conf, myAppContext, estimator, clock);

    dispatcher.register(Speculator.EventType.class, speculator);

    dispatcher.register(TaskEventType.class, new SpeculationRequestEventHandler());
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    myAppContext = new MyAppContext(MAP_TASKS, REDUCE_TASKS);
    myJob = myAppContext.getAllJobs().values().iterator().next();

    estimator.contextualize(conf, myAppContext);

    speculator = new DefaultSpeculator(conf, myAppContext, estimator, clock);

    dispatcher.register(Speculator.EventType.class, speculator);

    dispatcher.register(TaskEventType.class, new SpeculationRequestEventHandler());
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    myAppContext = new MyAppContext(MAP_TASKS, REDUCE_TASKS);
    myJob = myAppContext.getAllJobs().values().iterator().next();

    estimator.contextualize(conf, myAppContext);

    speculator = new DefaultSpeculator(conf, myAppContext, estimator, clock);

    dispatcher.register(Speculator.EventType.class, speculator);

    dispatcher.register(TaskEventType.class, new SpeculationRequestEventHandler());
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    myAppContext = new MyAppContext(MAP_TASKS, REDUCE_TASKS);
    myJob = myAppContext.getAllJobs().values().iterator().next();

    estimator.contextualize(conf, myAppContext);

    speculator = new DefaultSpeculator(conf, myAppContext, estimator, clock);

    dispatcher.register(Speculator.EventType.class, speculator);

    dispatcher.register(TaskEventType.class, new SpeculationRequestEventHandler());
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    @Override
    public void transition(TaskAttemptImpl taskAttempt,
        TaskAttemptEvent event) {
      // Tell any speculator that we're requesting a container
      taskAttempt.eventHandler.handle
          (new SpeculatorEvent(taskAttempt.getID().getTaskId(), +1));
      //request for container
      if (rescheduled) {
        taskAttempt.eventHandler.handle(
            ContainerRequestEvent.createContainerRequestEventForFailedContainer(
                taskAttempt.attemptId,
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        .handle(new ContainerRemoteLaunchEvent(taskAttempt.attemptId,
          launchContext, container, taskAttempt.remoteTask));

      // send event to speculator that our container needs are satisfied
      taskAttempt.eventHandler.handle
          (new SpeculatorEvent(taskAttempt.getID().getTaskId(), -1));
    }
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      // send event to speculator that we withdraw our container needs, if
      //  we're transitioning out of UNASSIGNED
      if (withdrawsContainerRequest) {
        taskAttempt.eventHandler.handle
            (new SpeculatorEvent(taskAttempt.getID().getTaskId(), -1));
      }

      switch(finalState) {
        case FAILED:
          taskAttempt.eventHandler.handle(new TaskTAttemptEvent(
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          NetUtils.createSocketAddr(taskAttempt.container.getNodeHttpAddress());
      taskAttempt.trackerName = nodeHttpInetAddr.getHostName();
      taskAttempt.httpPort = nodeHttpInetAddr.getPort();
      taskAttempt.sendLaunchedEvents();
      taskAttempt.eventHandler.handle
          (new SpeculatorEvent
              (taskAttempt.attemptId, true, taskAttempt.clock.getTime()));
      //make remoteTask reference as null as it is no more needed
      //and free up the memory
      taskAttempt.remoteTask = null;
     
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      taskAttempt.logAttemptFinishedEvent(TaskAttemptStateInternal.SUCCEEDED);
      taskAttempt.eventHandler.handle(new TaskTAttemptEvent(
          taskAttempt.attemptId,
          TaskEventType.T_ATTEMPT_SUCCEEDED));
      taskAttempt.eventHandler.handle
      (new SpeculatorEvent
          (taskAttempt.reportedStatus, taskAttempt.clock.getTime()));
   }
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