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https://issues.apache.org/jira/browse/YARN-2558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14137907#comment-14137907
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Vinod Kumar Vavilapalli commented on YARN-2558:
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bq. Yes, this should be fine for the short term. I just wanted to make it clear 
that until YARN-668 is addressed we're going to continue to break backwards 
compatibility and thus rolling upgrades with seemingly simple changes like this.
*Sigh* yes. I just marked YARN-668 as a blocker for 2.6. Thanks [~jianhe] for 
pointing out problems with preserving restart without the patch.

> Updating ContainerTokenIdentifier#read/write to use ContainerId#getContainerId
> ------------------------------------------------------------------------------
>
>                 Key: YARN-2558
>                 URL: https://issues.apache.org/jira/browse/YARN-2558
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Tsuyoshi OZAWA
>            Assignee: Tsuyoshi OZAWA
>            Priority: Blocker
>         Attachments: YARN-2558.1.patch, YARN-2558.2.patch, YARN-2558.3.patch
>
>
> We should update ContainerTokenIdentifier#read/write to use 
> {{getContainerId}} instead of {{getId}} to pass all container information 
> correctly.



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