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Java JobMapTaskRescheduledEvent类代码示例

本文整理汇总了Java中org.apache.hadoop.mapreduce.v2.app.job.event.JobMapTaskRescheduledEvent的典型用法代码示例。如果您正苦于以下问题:Java JobMapTaskRescheduledEvent类的具体用法?Java JobMapTaskRescheduledEvent怎么用?Java JobMapTaskRescheduledEvent使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。


JobMapTaskRescheduledEvent类属于org.apache.hadoop.mapreduce.v2.app.job.event包,在下文中一共展示了JobMapTaskRescheduledEvent类的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: transition

import org.apache.hadoop.mapreduce.v2.app.job.event.JobMapTaskRescheduledEvent; //导入依赖的package包/类
@Override
public TaskStateInternal transition(TaskImpl task, TaskEvent event) {
  TaskTAttemptEvent castEvent = (TaskTAttemptEvent) event;
  if (task.getInternalState() == TaskStateInternal.SUCCEEDED &&
      !castEvent.getTaskAttemptID().equals(task.successfulAttempt)) {
    // don't allow a different task attempt to override a previous
    // succeeded state
    task.finishedAttempts.add(castEvent.getTaskAttemptID());
    task.inProgressAttempts.remove(castEvent.getTaskAttemptID());
    return TaskStateInternal.SUCCEEDED;
  }

  // a successful REDUCE task should not be overridden
  //TODO: consider moving it to MapTaskImpl
  if (!TaskType.MAP.equals(task.getType())) {
    LOG.error("Unexpected event for REDUCE task " + event.getType());
    task.internalError(event.getType());
  }
  
  // tell the job about the rescheduling
  task.eventHandler.handle(
      new JobMapTaskRescheduledEvent(task.taskId));
  // super.transition is mostly coded for the case where an
  //  UNcompleted task failed.  When a COMPLETED task retroactively
  //  fails, we have to let AttemptFailedTransition.transition
  //  believe that there's no redundancy.
  unSucceed(task);
  // fake increase in Uncomplete attempts for super.transition
  task.inProgressAttempts.add(castEvent.getTaskAttemptID());
  return super.transition(task, event);
}
 
开发者ID:naver,项目名称:hadoop,代码行数:32,代码来源:TaskImpl.java


注:本文中的org.apache.hadoop.mapreduce.v2.app.job.event.JobMapTaskRescheduledEvent类示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。