[jira] [Created] (HADOOP-15742) Log if the ipc backoff is enabled in CallQueueManager

["Yiqun Lin (JIRA)" <ji...@apache.org>]

Yiqun Lin created HADOOP-15742:
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             Summary: Log if the ipc backoff is enabled in CallQueueManager
                 Key: HADOOP-15742
                 URL: https://issues.apache.org/jira/browse/HADOOP-15742
             Project: Hadoop Common
          Issue Type: Improvement
    Affects Versions: 3.1.1
            Reporter: Yiqun Lin
            Assignee: Ryan Wu


Currently we don't log the info of ipc backoff. It will look good to print this as well so that makes users know if we enable this.
{code:java}
  public CallQueueManager(Class<? extends BlockingQueue<E>> backingClass,
                          Class<? extends RpcScheduler> schedulerClass,
      boolean clientBackOffEnabled, int maxQueueSize, String namespace,
      Configuration conf) {
    int priorityLevels = parseNumLevels(namespace, conf);
    this.scheduler = createScheduler(schedulerClass, priorityLevels,
        namespace, conf);
    BlockingQueue<E> bq = createCallQueueInstance(backingClass,
        priorityLevels, maxQueueSize, namespace, conf);
    this.clientBackOffEnabled = clientBackOffEnabled;
    this.putRef = new AtomicReference<BlockingQueue<E>>(bq);
    this.takeRef = new AtomicReference<BlockingQueue<E>>(bq);
    LOG.info("Using callQueue: " + backingClass + " queueCapacity: " +
        maxQueueSize + " scheduler: " + schedulerClass);
  }
{code}



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