How to use

addUpdateThreadRunDuration

method

in

org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSOpDurations

 @Override
 public void run() {
  while (!Thread.currentThread().isInterrupted()) {
   try {
    Thread.sleep(updateInterval);
    long start = getClock().getTime();
    update();
    preemptTasksIfNecessary();
    long duration = getClock().getTime() - start;
    fsOpDurations.addUpdateThreadRunDuration(duration);
   } catch (InterruptedException ie) {
    LOG.warn("Update thread interrupted. Exiting.");
    return;
   } catch (Exception e) {
    LOG.error("Exception in fair scheduler UpdateThread", e);
   }
  }
 }
}

 @Override
 public void run() {
  while (!Thread.currentThread().isInterrupted()) {
   try {
    Thread.sleep(updateInterval);
    long start = getClock().getTime();
    update();
    preemptTasksIfNecessary();
    long duration = getClock().getTime() - start;
    fsOpDurations.addUpdateThreadRunDuration(duration);
   } catch (InterruptedException ie) {
    LOG.warn("Update thread interrupted. Exiting.");
    return;
   } catch (Exception e) {
    LOG.error("Exception in fair scheduler UpdateThread", e);
   }
  }
 }
}

 readLock.unlock();
fsOpDurations.addUpdateThreadRunDuration(getClock().getTime() - start);