Github user LJ1043041006 commented on the issue:
https://github.com/apache/zookeeper/pull/493
@eribeiro , I found this potential npe and open issue
[zk-3006](https://issues.apache.org/jira/browse/ZOOKEEPER-3006), but i am not
very familiar with zookeeper code, so could you please add a unit test? thinks!---
