Java TaskAttempt.getLaunchTime方法代码示例

import org.apache.hadoop.mapreduce.v2.app.job.TaskAttempt; //导入方法依赖的package包/类
private long getLaunchTime() {
  long taskLaunchTime = 0;
  boolean launchTimeSet = false;
  for (TaskAttempt at : attempts.values()) {
    // select the least launch time of all attempts
    long attemptLaunchTime = at.getLaunchTime();
    if (attemptLaunchTime != 0 && !launchTimeSet) {
      // For the first non-zero launch time
      launchTimeSet = true;
      taskLaunchTime = attemptLaunchTime;
    } else if (attemptLaunchTime != 0 && taskLaunchTime > attemptLaunchTime) {
      taskLaunchTime = attemptLaunchTime;
    }
  }
  if (!launchTimeSet) {
    return this.scheduledTime;
  }
  return taskLaunchTime;
}
 

import org.apache.hadoop.mapreduce.v2.app.job.TaskAttempt; //导入方法依赖的package包/类
private void handleTaskAttemptCompletion(TaskAttemptId attemptId,
    TaskAttemptCompletionEventStatus status) {
  TaskAttempt attempt = attempts.get(attemptId);
  //raise the completion event only if the container is assigned
  // to nextAttemptNumber
  if (attempt.getNodeHttpAddress() != null) {
    TaskAttemptCompletionEvent tce = recordFactory
        .newRecordInstance(TaskAttemptCompletionEvent.class);
    tce.setEventId(-1);
    String scheme = (encryptedShuffle) ? "https://" : "http://";
    tce.setMapOutputServerAddress(StringInterner.weakIntern(scheme
       + attempt.getNodeHttpAddress().split(":")[0] + ":"
       + attempt.getShufflePort()));
    tce.setStatus(status);
    tce.setAttemptId(attempt.getID());
    int runTime = 0;
    if (attempt.getFinishTime() != 0 && attempt.getLaunchTime() !=0)
      runTime = (int)(attempt.getFinishTime() - attempt.getLaunchTime());
    tce.setAttemptRunTime(runTime);
    
    //raise the event to job so that it adds the completion event to its
    //data structures
    eventHandler.handle(new JobTaskAttemptCompletedEvent(tce));
  }
}
 

import org.apache.hadoop.mapreduce.v2.app.job.TaskAttempt; //导入方法依赖的package包/类
/**
 * Go through a job and update the member variables with counts for
 * information to output in the page.
 *
 * @param job
 *          the job to get counts for.
 */
private void countTasksAndAttempts(Job job) {
  numReduces = 0;
  numMaps = 0;
  final Map<TaskId, Task> tasks = job.getTasks();
  if (tasks == null) {
    return;
  }
  for (Task task : tasks.values()) {
    // Attempts counts
    Map<TaskAttemptId, TaskAttempt> attempts = task.getAttempts();
    int successful, failed, killed;
    for (TaskAttempt attempt : attempts.values()) {

      successful = 0;
      failed = 0;
      killed = 0;
      if (TaskAttemptStateUI.NEW.correspondsTo(attempt.getState())) {
        // Do Nothing
      } else if (TaskAttemptStateUI.RUNNING.correspondsTo(attempt.getState())) {
        // Do Nothing
      } else if (TaskAttemptStateUI.SUCCESSFUL.correspondsTo(attempt
          .getState())) {
        ++successful;
      } else if (TaskAttemptStateUI.FAILED.correspondsTo(attempt.getState())) {
        ++failed;
      } else if (TaskAttemptStateUI.KILLED.correspondsTo(attempt.getState())) {
        ++killed;
      }

      switch (task.getType()) {
      case MAP:
        successfulMapAttempts += successful;
        failedMapAttempts += failed;
        killedMapAttempts += killed;
        if (attempt.getState() == TaskAttemptState.SUCCEEDED) {
          numMaps++;
          avgMapTime += (attempt.getFinishTime() - attempt.getLaunchTime());
        }
        break;
      case REDUCE:
        successfulReduceAttempts += successful;
        failedReduceAttempts += failed;
        killedReduceAttempts += killed;
        if (attempt.getState() == TaskAttemptState.SUCCEEDED) {
          numReduces++;
          avgShuffleTime += (attempt.getShuffleFinishTime() - attempt
              .getLaunchTime());
          avgMergeTime += attempt.getSortFinishTime()
              - attempt.getShuffleFinishTime();
          avgReduceTime += (attempt.getFinishTime() - attempt
              .getSortFinishTime());
        }
        break;
      }
    }
  }

  if (numMaps > 0) {
    avgMapTime = avgMapTime / numMaps;
  }

  if (numReduces > 0) {
    avgReduceTime = avgReduceTime / numReduces;
    avgShuffleTime = avgShuffleTime / numReduces;
    avgMergeTime = avgMergeTime / numReduces;
  }
}