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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2131) Add a way to format the RMStateStore
Date Thu, 10 Jul 2014 00:20:04 GMT

    [ https://issues.apache.org/jira/browse/YARN-2131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14056942#comment-14056942
] 

Karthik Kambatla commented on YARN-2131:
----------------------------------------

bq. the patch is done in a way by instantiating a new ResourceManager
We followed the HDFS NN format implementation. Given NN supports upgrades and downgrades,
I don't think the way it is currently implemented hinders supporting upgrades/downgrades in
the future. 

> Add a way to format the RMStateStore
> ------------------------------------
>
>                 Key: YARN-2131
>                 URL: https://issues.apache.org/jira/browse/YARN-2131
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: resourcemanager
>    Affects Versions: 2.4.0
>            Reporter: Karthik Kambatla
>            Assignee: Robert Kanter
>             Fix For: 2.6.0
>
>         Attachments: YARN-2131.patch, YARN-2131.patch
>
>
> There are cases when we don't want to recover past applications, but recover applications
going forward. To do this, one has to clear the store. Today, there is no easy way to do this
and users should understand how each store works.



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