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https://issues.apache.org/jira/browse/YARN-2984?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14279822#comment-14279822
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Karthik Kambatla commented on YARN-2984:
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Yes. 2.6.x is the last Java 6 release. 2.7.x is all Java 7, dropping Java 6. 

> Metrics for container's actual memory usage
> -------------------------------------------
>
>                 Key: YARN-2984
>                 URL: https://issues.apache.org/jira/browse/YARN-2984
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>    Affects Versions: 2.6.0
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>         Attachments: yarn-2984-1.patch, yarn-2984-2.patch, yarn-2984-3.patch, 
> yarn-2984-prelim.patch
>
>
> It would be nice to capture resource usage per container, for a variety of 
> reasons. This JIRA is to track memory usage. 
> YARN-2965 tracks the resource usage on the node, and the two implementations 
> should reuse code as much as possible. 



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