@Override
  public void registerAttemptDirs(AttemptPathIdentifier identifier,
                                  AttemptPathInfo pathInfo) {
    shuffle.registerAttemptDirs(identifier, pathInfo);
  }
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