private static void syncThreadStart(final CountDownLatch cdlIn, final CountDownLatch cdlOut) {
    cdlIn.countDown();
    try {
      cdlOut.await();
    } catch (InterruptedException e) {
      throw new RuntimeException(e);
    }
  }
Dump all data in the table by bucket in JSON format
ql/src/test/org/apache/hadoop/hive/ql/TestTxnCommands.java