Github user lvfangmin commented on the issue:
https://github.com/apache/zookeeper/pull/611
@wangchaod just send another PR for removing the watcher when closing netty
cnxn: https://github.com/apache/zookeeper/pull/612.
As I mentioned, this will also be fixed in PR of ZOOKEEPER-1177, but let's
get this fixed separately.---
