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https://issues.apache.org/jira/browse/MAPREDUCE-5311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13735011#comment-13735011
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Alejandro Abdelnur commented on MAPREDUCE-5311:
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[~acmurthy], I don't see how this will break BC, it is not being proposed 
removing the counter, but either making it zero or as [~sandyr] suggested 
introduced CONTAINER_MILLIS_MAP and map SLOT_MILLIS_MAP to it (approach that 
will make more sense than the current value). I don't want to punt because you 
are blocking YARN-1004 because of this one. YARN-1004 should go in 2.1.0-beta. 
Please ping me if you want to chat offline over the phone if you think will be 
easier to discussed it. 
                
> Replace SLOTS_MILLIS counters with MEM_MILLIS
> ---------------------------------------------
>
>                 Key: MAPREDUCE-5311
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5311
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: applicationmaster
>    Affects Versions: 2.0.4-alpha
>            Reporter: Alejandro Abdelnur
>            Assignee: Sandy Ryza
>            Priority: Blocker
>         Attachments: MAPREDUCE-5311-1.patch, MAPREDUCE-5311.patch, 
> MAPREDUCE-5311.patch
>
>
> Per discussion in MAPREDUCE-5310 and comments in the code we should remove 
> all the related logic and just leave the counter constant for backwards 
> compatibility and deprecate the counter constants.

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