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https://issues.apache.org/jira/browse/YARN-6143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15852685#comment-15852685
 ] 

Sunil G commented on YARN-6143:
-------------------------------

Yes. I think we need to keep old node label string as it is for backward 
compatibility. New object could be used for users who needs to specify 
exclusivity, and we can assume exclusivity as true in default case where string 
is given.

> Fix incompatible issue caused by YARN-3583
> ------------------------------------------
>
>                 Key: YARN-6143
>                 URL: https://issues.apache.org/jira/browse/YARN-6143
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: rolling upgrade
>            Reporter: Wangda Tan
>            Assignee: Wangda Tan
>            Priority: Blocker
>
> As mentioned by comment: 
> https://issues.apache.org/jira/browse/YARN-6142?focusedCommentId=15852009&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15852009.
>  We need to fix the incompatible issue caused by YARN-3583.



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