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From "Xuan Gong (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3999) RM hangs on draing events
Date Wed, 12 Aug 2015 01:28:47 GMT

    [ https://issues.apache.org/jira/browse/YARN-3999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14692729#comment-14692729

Xuan Gong commented on YARN-3999:

Thanks, Jian. Committed into trunk/branch-2/branch-2.7.

> RM hangs on draing events
> -------------------------
>                 Key: YARN-3999
>                 URL: https://issues.apache.org/jira/browse/YARN-3999
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Jian He
>            Assignee: Jian He
>             Fix For: 2.7.2
>         Attachments: YARN-3999-branch-2.7.patch, YARN-3999.1.patch, YARN-3999.2.patch,
YARN-3999.2.patch, YARN-3999.3.patch, YARN-3999.4.patch, YARN-3999.5.patch, YARN-3999.patch,
> If external systems like ATS, or ZK becomes very slow, draining all the events take a
lot of time. If this time becomes larger than 10 mins, all applications will expire. Fixes
> 1. add a timeout and stop the dispatcher even if not all events are drained.
> 2. Move ATS service out from RM active service so that RM doesn't need to wait for ATS
to flush the events when transitioning to standby.
> 3. Stop client-facing services (ClientRMService etc.) first so that clients get fast
notification that RM is stopping/transitioning.

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