@Override
    public void processResult(CuratorFramework zooKeeperClient, CuratorEvent event)
        throws Exception {
      if (event.getType() == CuratorEventType.DELETE) {
        zkDeleteResultCode = KeeperException.Code.get(event.getResultCode());
        zkDeleteSignal.countDown();
      }
    }
Remove all znodes corresponding to the given version number from ZooKeeper

@param versionNumber
@throws Exception
service/src/java/org/apache/hive/service/server/HiveServer2.java