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From "Varun Saxena (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4000) RM crashes with NPE if leaf queue becomes parent queue during restart
Date Tue, 15 Sep 2015 11:02:46 GMT

    [ https://issues.apache.org/jira/browse/YARN-4000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14745248#comment-14745248
] 

Varun Saxena commented on YARN-4000:
------------------------------------

[~jianhe], actually there is a problem here. RMAppImpl#createApplicationState would change
the state to state before killing if app is in KILLING state. So when application report is
created, we may have diagnostic information saying app has been killed but to the end user,
state may be something else.

> RM crashes with NPE if leaf queue becomes parent queue during restart
> ---------------------------------------------------------------------
>
>                 Key: YARN-4000
>                 URL: https://issues.apache.org/jira/browse/YARN-4000
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler, resourcemanager
>    Affects Versions: 2.6.0
>            Reporter: Jason Lowe
>            Assignee: Varun Saxena
>         Attachments: YARN-4000.01.patch, YARN-4000.02.patch
>
>
> This is a similar situation to YARN-2308.  If an application is active in queue A and
then the RM restarts with a changed capacity scheduler configuration where queue A becomes
a parent queue to other subqueues then the RM will crash with a NullPointerException.



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