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From "Rohith (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3410) YARN admin should be able to remove individual application records from RMStateStore
Date Thu, 02 Apr 2015 05:24:53 GMT

    [ https://issues.apache.org/jira/browse/YARN-3410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14392173#comment-14392173
] 

Rohith commented on YARN-3410:
------------------------------

For state store format  in YARN-2131, discussion happened whether to format state using admin
service or resourcemanager start up options [comment link|https://issues.apache.org/jira/browse/YARN-2131?focusedCommentId=14032694&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14032694].
Similarly I am thinking for application state deletion options
# ./yarn resourcemanager -delete-from-state-store app-id OR
# ./yarn rmadmin -delete-from-state-store app-id
1st choice is pretty staight forward deletion neverthless of app state is finished or running.
I would like to choose 2nd option.


> YARN admin should be able to remove individual application records from RMStateStore
> ------------------------------------------------------------------------------------
>
>                 Key: YARN-3410
>                 URL: https://issues.apache.org/jira/browse/YARN-3410
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: resourcemanager, yarn
>            Reporter: Wangda Tan
>            Assignee: Rohith
>            Priority: Critical
>
> When RM state store entered an unexpected state, one example is YARN-2340, when an attempt
is not in final state but app already completed, RM can never get up unless format RMStateStore.
> I think we should support remove individual application records from RMStateStore to
unblock RM admin make choice of either waiting for a fix or format state store.
> In addition, RM should be able to report all fatal errors (which will shutdown RM) when
doing app recovery, this can save admin some time to remove apps in bad state.



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