@Test
  public void concurrentRenameTest() throws Exception {
    ConcurrentCreator concurrentCreator =
        new ConcurrentCreator(DEPTH, CONCURRENCY_DEPTH, ROOT_PATH);
    concurrentCreator.call();

    int numFiles = mMasterInfo.ls(ROOT_PATH, true).size();

    ConcurrentRenamer concurrentRenamer =
        new ConcurrentRenamer(DEPTH, CONCURRENCY_DEPTH, ROOT_PATH, ROOT_PATH2, "");
    concurrentRenamer.call();

    Assert.assertEquals(numFiles, mMasterInfo.ls(ROOT_PATH2, true).size());
  }
  @Test
  public void concurrentRenameTest() throws Exception {
    ConcurrentCreator concurrentCreator =
        new ConcurrentCreator(DEPTH, CONCURRENCY_DEPTH, ROOT_PATH);
    concurrentCreator.call();

    int numFiles = mFsMaster.getFileInfoList(ROOT_PATH, true).size();

    ConcurrentRenamer concurrentRenamer =
        new ConcurrentRenamer(
            DEPTH, CONCURRENCY_DEPTH, ROOT_PATH, ROOT_PATH2, AlluxioURI.EMPTY_URI);
    concurrentRenamer.call();

    Assert.assertEquals(numFiles, mFsMaster.getFileInfoList(ROOT_PATH2, true).size());
  }