org.apache.zookeeper.ClientCnxn] - Error while calling watcher

错误

提示错误，但实际的操作却是成功了。

解决办法

ZooKeeper zk = new ZooKeeper(url, 30000, new Watcher(){
    @Override
    public void process(WatchedEvent event) {
        logger.debug(" receive event : "+event.getType().name());
    }
});