@Override
      public Thread newThread(Runnable r) {
        return new Thread(r, WORKER_THREAD_NAME_PREFIX + workerThreadCounter.incrementAndGet());
      }
Should the shuffle use posix_fadvise calls to manage the OS cache during
sendfile
llap-server/src/java/org/apache/hadoop/hive/llap/shufflehandler/ShuffleHandler.java