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https://issues.apache.org/jira/browse/YARN-6736?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16119950#comment-16119950
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Varun Saxena commented on YARN-6736:
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Is this a merge blocker?

> Consider writing to both ats v1 & v2 from RM for smoother upgrades
> ------------------------------------------------------------------
>
>                 Key: YARN-6736
>                 URL: https://issues.apache.org/jira/browse/YARN-6736
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Vrushali C
>            Assignee: Rohith Sharma K S
>         Attachments: YARN-6736-YARN-5355.001.patch
>
>
> When the cluster is being upgraded from atsv1 to v2, it may be good to have a 
> brief time period during which RM writes to both atsv1 and v2. This will help 
> frameworks like Tez migrate more smoothly. 



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