private void getDataAndWatch(String path) {
    try {
      byte[] data = ZKUtil.getDataAndWatch(watcher, path);
      upsertQueue(path, data);
    } catch (KeeperException e) {
      LOG.warn("Unexpected exception handling nodeCreated event", e);
    }
  }
Set data for client ZK and retry until succeed. Be very careful to prevent dead loop when
modifying this method
@param node the znode to set on client ZK
@param data the data to set to client ZK
@throws InterruptedException if the thread is interrupted during process
hbase-server/src/main/java/org/apache/hadoop/hbase/master/zksyncer/ClientZKSyncer.java