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https://issues.apache.org/jira/browse/YARN-2562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14143567#comment-14143567
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Jian He commented on YARN-2562:
-------------------------------

patch looks good. thanks Tsuyoshi ! could you add brief comment in the toString 
method that the epoch will increase if RM restarts or fails over?

> ContainerId@toString() is unreadable for epoch >0 after YARN-2182
> -----------------------------------------------------------------
>
>                 Key: YARN-2562
>                 URL: https://issues.apache.org/jira/browse/YARN-2562
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Vinod Kumar Vavilapalli
>            Assignee: Tsuyoshi OZAWA
>            Priority: Critical
>         Attachments: YARN-2562.1.patch
>
>
> ContainerID string format is unreadable for RMs that restarted at least once 
> (epoch > 0) after YARN-2182. For e.g, 
> container_1410901177871_0001_01_000005_17.



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