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Posted to yarn-issues@hadoop.apache.org by "Varun Saxena (JIRA)" <ji...@apache.org> on 2014/11/23 22:10:12 UTC

[jira] [Updated] (YARN-2136) RMStateStore can explicitly handle store/update events when fenced

     [ https://issues.apache.org/jira/browse/YARN-2136?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Varun Saxena updated YARN-2136:
-------------------------------
    Attachment: YARN-2136.patch

If there are pending events in Dispatcher queue when the State store becomes fenced, there is no point in processing these events when RM switches to standby. A fenced state will avoid that.

> RMStateStore can explicitly handle store/update events when fenced
> ------------------------------------------------------------------
>
>                 Key: YARN-2136
>                 URL: https://issues.apache.org/jira/browse/YARN-2136
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Jian He
>            Assignee: Varun Saxena
>         Attachments: YARN-2136.patch
>
>
> RMStateStore can choose to handle/ignore store/update events upfront instead of invoking more ZK operations if state store is at fenced state. 



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