Package org.apache.tez.dag.app.dag

Examples of org.apache.tez.dag.app.dag.TaskAttempt$TaskAttemptStatus

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  public void vertexCompleted(Vertex vertex) {
  }

  @Override
  public void scheduleTask(DAGEventSchedulerUpdate event) {
    TaskAttempt attempt = event.getAttempt();
    Vertex vertex = dag.getVertex(attempt.getVertexID());
    int vertexDistanceFromRoot = vertex.getDistanceFromRoot();

    // natural priority. Handles failures and retries.
    int priority = (vertexDistanceFromRoot + 1) * 2;
   
    if(attempt.getIsRescheduled()) {
      // higher priority for retries of failed attempts. Only makes sense in
      // case the task is faulty and we want to retry before other tasks in
      // the same vertex to fail fast. But looks like this may happen also for
      // other cases like retry because outputs were unavailable.
      priority--;
    }

    LOG.info("Scheduling " + attempt.getID() + " at priority " + priority);
   
    TaskAttemptEventSchedule attemptEvent = new TaskAttemptEventSchedule(
        attempt.getID(), Priority.newInstance(priority));
                                     
    sendEvent(attemptEvent);
  }
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    // TODO does this container need to be stopped via C_STOP_REQUEST
    sendEvent(new AMContainerEventStopRequest(containerId));
  }

  private void handleTAUnsuccessfulEnd(AMSchedulerEventTAEnded event) {
    TaskAttempt attempt = event.getAttempt();
    boolean wasContainerAllocated = taskScheduler.deallocateTask(attempt, false);
    // use stored value of container id in case the scheduler has removed this
    // assignment because the task has been deallocated earlier.
    // retroactive case
    ContainerId attemptContainerId = attempt.getAssignedContainerID();

    if(!wasContainerAllocated) {
      LOG.info("Task: " + attempt.getID() +
          " has no container assignment in the scheduler");
      if (attemptContainerId != null) {
        LOG.error("No container allocated to task: " + attempt.getID()
            + " according to scheduler. Task reported container id: "
            + attemptContainerId);
      }
    }

    if (attemptContainerId != null) {
      // TODO either ways send the necessary events
      // Ask the container to stop.
      sendEvent(new AMContainerEventStopRequest(attemptContainerId));
      // Inform the Node - the task has asked to be STOPPED / has already
      // stopped.
      sendEvent(new AMNodeEventTaskAttemptEnded(appContext.getAllContainers().
          get(attemptContainerId).getContainer().getNodeId(), attemptContainerId,
          attempt.getID(), event.getState() == TaskAttemptState.FAILED));
    }
  }
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          attempt.getID(), event.getState() == TaskAttemptState.FAILED));
    }
  }

  private void handleTASucceeded(AMSchedulerEventTAEnded event) {
    TaskAttempt attempt = event.getAttempt();
    ContainerId usedContainerId = event.getUsedContainerId();

    // This could be null if a task fails / is killed before a container is
    // assigned to it.
    if (event.getUsedContainerId() != null) {
      sendEvent(new AMContainerEventTASucceeded(usedContainerId,
          event.getAttemptID()));
      sendEvent(new AMNodeEventTaskAttemptSucceeded(appContext.getAllContainers().
          get(usedContainerId).getContainer().getNodeId(), usedContainerId,
          event.getAttemptID()));
    }

    boolean wasContainerAllocated = taskScheduler.deallocateTask(attempt, true);
    if (!wasContainerAllocated) {
      LOG.error("De-allocated successful task: " + attempt.getID()
          + ", but TaskScheduler reported no container assigned to task");
    }
  }
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          + ", but TaskScheduler reported no container assigned to task");
    }
  }

  private void handleTaLaunchRequest(AMSchedulerEventTALaunchRequest event) {
    TaskAttempt taskAttempt = event.getTaskAttempt();
    TaskLocationHint locationHint = event.getLocationHint();
    String hosts[] = null;
    String racks[] = null;
    if (locationHint != null) {
      if (locationHint.getAffinitizedContainer() != null) {
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          .getNodeId(), container.getId()));
    }

    AMSchedulerEventTALaunchRequest event =
                         (AMSchedulerEventTALaunchRequest) appCookie;
    TaskAttempt taskAttempt = event.getTaskAttempt();
    // TODO - perhaps check if the task still needs this container
    // because the deallocateTask downcall may have raced with the
    // taskAllocated() upcall
    assert task.equals(taskAttempt);
    if (appContext.getAllContainers().get(containerId).getState() == AMContainerState.ALLOCATED) {
      sendEvent(new AMContainerEventLaunchRequest(containerId, taskAttempt.getVertexID(),
          event.getContainerContext()));
    }
    sendEvent(new DAGEventSchedulerUpdateTAAssigned(taskAttempt, container));
    sendEvent(new AMContainerEventAssignTA(containerId, taskAttempt.getID(),
        event.getRemoteTaskSpec(), event.getContainerContext().getLocalResources(), event
            .getContainerContext().getCredentials()));
  }
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        return; // event not relevant any more
      }
      Task task =
          dag.getVertex(event.getTaskAttemptID().getTaskID().getVertexID()).
              getTask(event.getTaskAttemptID().getTaskID());
      TaskAttempt attempt = task.getAttempt(event.getTaskAttemptID());
      ((EventHandler<TaskAttemptEvent>) attempt).handle(event);
    }
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        return; // event not relevant any more
      }
      Task task =
          dag.getVertex(event.getTaskAttemptID().getTaskID().getVertexID()).
              getTask(event.getTaskAttemptID().getTaskID());
      TaskAttempt attempt = task.getAttempt(event.getTaskAttemptID());
      ((EventHandler<TaskAttemptEvent>) attempt).handle(event);
    }
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          // need to be stopped.
        }
      }
    }*/

    TaskAttempt attempt = event.getAttempt();
    boolean wasContainerAllocated = taskScheduler.deallocateTask(attempt, false);
    // use stored value of container id in case the scheduler has removed this
    // assignment because the task has been deallocated earlier.
    // retroactive case
    ContainerId attemptContainerId = attempt.getAssignedContainerID();

    if(!wasContainerAllocated) {
      LOG.info("Task: " + attempt.getID() +
          " has no container assignment in the scheduler");
      if (attemptContainerId != null) {
        LOG.error("No container allocated to task: " + attempt.getID()
            + " according to scheduler. Task reported container id: "
            + attemptContainerId);
      }
    }

    if (attemptContainerId != null) {
      // TODO either ways send the necessary events
      // Ask the container to stop.
      sendEvent(new AMContainerEventStopRequest(attemptContainerId));
      // Inform the Node - the task has asked to be STOPPED / has already
      // stopped.
      sendEvent(new AMNodeEventTaskAttemptEnded(appContext.getAllContainers().
          get(attemptContainerId).getContainer().getNodeId(), attemptContainerId,
          attempt.getID(), event.getState() == TaskAttemptState.FAILED));
    }
  }
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    } else {
      LOG.warn("Received TaskAttemptSucceededEvent for unmapped TaskAttempt: "
          + event.getAttemptID() + ". Full event: " + event);
    }*/

    TaskAttempt attempt = event.getAttempt();
    ContainerId usedContainerId = event.getUsedContainerId();

    // This could be null if a task fails / is killed before a container is
    // assigned to it.
    if (event.getUsedContainerId() != null) {
      sendEvent(new AMContainerEventTASucceeded(usedContainerId,
          event.getAttemptID()));
      sendEvent(new AMNodeEventTaskAttemptSucceeded(appContext.getAllContainers().
          get(usedContainerId).getContainer().getNodeId(), usedContainerId,
          event.getAttemptID()));
    }

    boolean wasContainerAllocated = taskScheduler.deallocateTask(attempt, true);
    if (!wasContainerAllocated) {
      LOG.error("De-allocated successful task: " + attempt.getID()
          + ", but TaskScheduler reported no container assigned to task");
    }
  }
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     */
    // TODO resource adjustment needs to move into dag
    /*Resource mapResourceReqt = maybeComputeNormalizedRequestForType(event,
        TaskType.MAP, mapResourceReqt);
    event.getCapability().setMemory(mapResourceReqt);*/
    TaskAttempt taskAttempt = event.getTaskAttempt();
    taskScheduler.allocateTask(taskAttempt,
                               event.getCapability(),
                               event.getHosts(),
                               event.getRacks(),
                               event.getPriority(),
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Related Classes of org.apache.tez.dag.app.dag.TaskAttempt$TaskAttemptStatus

  • org.apache.tez.common.counters.TezCounters
  • org.apache.tez.dag.app.dag.impl.DAGSchedulerMRR
  • org.apache.tez.dag.app.dag.impl.DAGSchedulerNaturalOrder
  • org.apache.tez.dag.app.dag.impl.TaskImpl
  • org.apache.tez.dag.app.dag.impl.TaskImpl$TaskRetroactiveFailureTransition
  • org.apache.tez.dag.app.dag.impl.TestDAGImpl
  • org.apache.tez.dag.app.dag.impl.TestDAGScheduler
  • org.apache.tez.dag.app.dag.impl.VertexManager$VertexManagerPluginContextImpl
  • org.apache.tez.dag.app.DAGAppMaster$TaskAttemptEventDispatcher
  • org.apache.tez.dag.app.rm.TaskSchedulerEventHandler
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