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Posted to yarn-issues@hadoop.apache.org by "Karthik Kambatla (JIRA)" <ji...@apache.org> on 2014/04/12 18:52:16 UTC

[jira] [Assigned] (YARN-1934) Potential NPE in ZKRMStateStore caused by handling Disconnected event from ZK.

     [ https://issues.apache.org/jira/browse/YARN-1934?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Karthik Kambatla reassigned YARN-1934:
--------------------------------------

    Assignee: Karthik Kambatla

> 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
>            Assignee: Karthik Kambatla
>            Priority: Critical
>         Attachments: RM.txt
>
>
> 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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