Java EventType.START_TIME_CHANGED属性代码示例

@Override
public synchronized void jobUpdated(JobChangeEvent event) {
  JobInProgress job = event.getJobInProgress();
  if (event instanceof JobStatusChangeEvent) {
    // Check if the ordering of the job has changed
    // For now priority and start-time can change the job ordering
    JobStatusChangeEvent statusEvent = (JobStatusChangeEvent)event;
    JobSchedulingInfo oldInfo =  
      new JobSchedulingInfo(statusEvent.getOldStatus());
    if (statusEvent.getEventType() == EventType.PRIORITY_CHANGED 
        || statusEvent.getEventType() == EventType.START_TIME_CHANGED) {
      // Make a priority change
      reorderJobs(job, oldInfo);
    } else if (statusEvent.getEventType() == EventType.RUN_STATE_CHANGED) {
      // Check if the job is complete
      int runState = statusEvent.getNewStatus().getRunState();
      if (runState == JobStatus.SUCCEEDED
          || runState == JobStatus.FAILED
          || runState == JobStatus.KILLED) {
        jobCompleted(oldInfo);
      }
    }
  }
}
 

public void setStartTime(FakeJobInProgress fjob, long start) {
  // take a snapshot of the status before changing it
  JobStatus oldStatus = (JobStatus)fjob.getStatus().clone();
  
  fjob.startTime = start; // change the start time of the job
  fjob.status.setStartTime(start); // change the start time of the jobstatus
  
  JobStatus newStatus = (JobStatus)fjob.getStatus().clone();
  
  JobStatusChangeEvent event = 
    new JobStatusChangeEvent (fjob, EventType.START_TIME_CHANGED, oldStatus,
                              newStatus);
  for (JobInProgressListener listener : mylisteners) {
    listener.jobUpdated(event);
  }
}
 

private void jobStateChanged(JobStatusChangeEvent event, QueueInfo qi) {
  JobInProgress job = event.getJobInProgress();
  JobSchedulingInfo oldJobStateInfo = 
    new JobSchedulingInfo(event.getOldStatus());
  // Check if the ordering of the job has changed
  // For now priority and start-time can change the job ordering
  if (event.getEventType() == EventType.PRIORITY_CHANGED 
      || event.getEventType() == EventType.START_TIME_CHANGED) {
    // Make a priority change
    reorderJobs(job, oldJobStateInfo, qi);
  } else if (event.getEventType() == EventType.RUN_STATE_CHANGED) {
    // Check if the job is complete
    int runState = job.getStatus().getRunState();
    if (runState == JobStatus.SUCCEEDED
        || runState == JobStatus.FAILED
        || runState == JobStatus.KILLED) {
      jobCompleted(job, oldJobStateInfo, qi);
    } else if (runState == JobStatus.RUNNING) {
      makeJobRunning(job, oldJobStateInfo, qi);
    }
  }
}
 

public void setStartTime(FakeJobInProgress fjob, long start) {
  // take a snapshot of the status before changing it
  JobStatus oldStatus = (JobStatus)fjob.getStatus().clone();
  
  fjob.startTime = start; // change the start time of the job
  fjob.status.setStartTime(start); // change the start time of the jobstatus
  
  JobStatus newStatus = (JobStatus)fjob.getStatus().clone();
  
  JobStatusChangeEvent event = 
    new JobStatusChangeEvent (fjob, EventType.START_TIME_CHANGED, oldStatus,
                              newStatus);
  for (JobInProgressListener listener : listeners) {
    listener.jobUpdated(event);
  }
}
 

private JobStatusChangeEvent updateJob(JobInProgress jip, 
                                       JobHistory.JobInfo job) {
  // Change the job priority
  String jobpriority = job.get(Keys.JOB_PRIORITY);
  JobPriority priority = JobPriority.valueOf(jobpriority);
  // It's important to update this via the jobtracker's api as it will 
  // take care of updating the event listeners too
  setJobPriority(jip.getJobID(), priority);

  // Save the previous job status
  JobStatus oldStatus = (JobStatus)jip.getStatus().clone();
  
  // Set the start/launch time only if there are recovered tasks
  // Increment the job's restart count
  jip.updateJobInfo(job.getLong(JobHistory.Keys.SUBMIT_TIME), 
                    job.getLong(JobHistory.Keys.LAUNCH_TIME));

  // Save the new job status
  JobStatus newStatus = (JobStatus)jip.getStatus().clone();
  
  return new JobStatusChangeEvent(jip, EventType.START_TIME_CHANGED, oldStatus, 
                                  newStatus);
}
 

private void jobStateChanged(JobStatusChangeEvent event) {
  // Resort the job queue if the job-start-time or job-priority changes
  if (event.getEventType() == EventType.START_TIME_CHANGED
      || event.getEventType() == EventType.PRIORITY_CHANGED) {
    synchronized (jobInitQueue) {
      resortInitQueue();
    }
  }
}
 

private JobStatusChangeEvent updateJob(JobInProgress jip, 
    JobHistory.JobInfo job) {
  // Change the job priority
  String jobpriority = job.get(Keys.JOB_PRIORITY);
  JobPriority priority = JobPriority.valueOf(jobpriority);
  // It's important to update this via the jobtracker's api as it will 
  // take care of updating the event listeners too
  
  try {
    setJobPriority(jip.getJobID(), priority);
  } catch (IOException e) {
    // This will not happen. JobTracker can set jobPriority of any job
    // as mrOwner has the needed permissions.
    LOG.warn("Unexpected. JobTracker could not do SetJobPriority on "
             + jip.getJobID() + ". " + e);
  }

  // Save the previous job status
  JobStatus oldStatus = (JobStatus)jip.getStatus().clone();
  
  // Set the start/launch time only if there are recovered tasks
  // Increment the job's restart count
  jip.updateJobInfo(job.getLong(JobHistory.Keys.SUBMIT_TIME), 
                    job.getLong(JobHistory.Keys.LAUNCH_TIME));

  // Save the new job status
  JobStatus newStatus = (JobStatus)jip.getStatus().clone();
  
  return new JobStatusChangeEvent(jip, EventType.START_TIME_CHANGED, oldStatus, 
                                  newStatus);
}