Rohith created YARN-1934:
----------------------------
Summary: Potential NPE in ZKRMStateStore caused by handling
Disconnected event from ZK.
Key: YARN-1934
URL: https://issues.apache.org/jira/browse/YARN-1934
Project: Hadoop YARN
Issue Type: Bug
Components: resourcemanager
Affects Versions: 2.4.0
Reporter: Rohith
Priority: Critical
For ZK disconnected event , zkClient is set to null. It is very much prone to
throw NPE.
{noformat}
case Disconnected:
LOG.info("ZKRMStateStore Session disconnected");
oldZkClient = zkClient;
zkClient = null;
break;
{noformat}
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