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https://issues.apache.org/jira/browse/YARN-6736?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16127919#comment-16127919
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Hadoop QA commented on YARN-6736:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m  
1s{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red}  0m  8s{color} 
| {color:red} YARN-6736 does not apply to YARN-5355. Rebase required? Wrong 
Branch? See https://wiki.apache.org/hadoop/HowToContribute for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Issue | YARN-6736 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12882015/YARN-6736-YARN-5355.002.patch
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| Console output | 
https://builds.apache.org/job/PreCommit-YARN-Build/16914/console |
| Powered by | Apache Yetus 0.6.0-SNAPSHOT   http://yetus.apache.org |


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> 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: Aaron Gresch
>         Attachments: YARN-6736-YARN-5355.001.patch, 
> YARN-6736-YARN-5355.002.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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