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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3999) Add a timeout when drain the dispatcher
Date Thu, 30 Jul 2015 23:32:04 GMT

    [ https://issues.apache.org/jira/browse/YARN-3999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14648484#comment-14648484
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Jian He commented on YARN-3999:
-------------------------------

Uploaded a patch which adds the timeout on draining the dispatcher. The value is set to be
half of the am-rm-expiry-time. 
Beyond that, I also changed the order of a couple of services which might take long time to
flush the events on stop.

> Add a timeout when drain the dispatcher
> ---------------------------------------
>
>                 Key: YARN-3999
>                 URL: https://issues.apache.org/jira/browse/YARN-3999
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Jian He
>            Assignee: Jian He
>         Attachments: 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. We can
add a timeout and stop the dispatcher even if not all events are drained.



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