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From "Chang Li (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-4334) Ability to avoid ResourceManager recovery if state store is "too old"
Date Mon, 23 Nov 2015 20:33:11 GMT

     [ https://issues.apache.org/jira/browse/YARN-4334?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Chang Li updated YARN-4334:
    Attachment: YARN-4334.4.patch

.4 patch fix some checkstyle and whitespace issues. TestWebApp is tracked by YARN-4379, not
related to my change. TestAMAuthorization and TestClientRMTokens are not caused by my patch
[~jlowe], please help review the latest patch, thanks!

> Ability to avoid ResourceManager recovery if state store is "too old"
> ---------------------------------------------------------------------
>                 Key: YARN-4334
>                 URL: https://issues.apache.org/jira/browse/YARN-4334
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: resourcemanager
>            Reporter: Jason Lowe
>            Assignee: Chang Li
>         Attachments: YARN-4334.2.patch, YARN-4334.3.patch, YARN-4334.4.patch, YARN-4334.patch,
YARN-4334.wip.2.patch, YARN-4334.wip.3.patch, YARN-4334.wip.4.patch, YARN-4334.wip.patch
> There are times when a ResourceManager has been down long enough that ApplicationMasters
and potentially external client-side monitoring mechanisms have given up completely.  If the
ResourceManager starts back up and tries to recover we can get into situations where the RM
launches new application attempts for the AMs that gave up, but then the client _also_ launches
another instance of the app because it assumed everything was dead.
> It would be nice if the RM could be optionally configured to avoid trying to recover
if the state store was "too old."  The RM would come up without any applications recovered,
but we would avoid a double-submission situation.

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