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https://issues.apache.org/jira/browse/MAPREDUCE-5875?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16108052#comment-16108052
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Junping Du edited comment on MAPREDUCE-5875 at 7/31/17 10:05 PM:
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Drop 2.9.0 as the patch get reverted from branch-2. Just clone MAPREDUCE-6925 
for improved fix.
To be clear, this fix never land in any non-alpha release, so we shouldn't 
claim the fix is released or any regression due to revert of this fix.


was (Author: djp):
Drop 2.9.0 as the patch get reverted from branch-2. Just clone MAPREDUCE-6924 
for improved fix.
To be clear, this fix never land in any non-alpha release, so we shouldn't 
claim the fix is released or any regression due to revert of this fix.

> Make Counter limits consistent across JobClient, MRAppMaster, and YarnChild
> ---------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5875
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5875
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: applicationmaster, client, task
>    Affects Versions: 2.4.0
>            Reporter: Gera Shegalov
>            Assignee: Gera Shegalov
>             Fix For: 3.0.0-alpha1
>
>         Attachments: MAPREDUCE-5875.v01.patch, MAPREDUCE-5875.v02.patch, 
> MAPREDUCE-5875.v03.patch, MAPREDUCE-5875.v04.patch, MAPREDUCE-5875.v05.patch, 
> MAPREDUCE-5875.v06.patch, MAPREDUCE-5875.v07.patch, MAPREDUCE-5875.v08.patch, 
> MAPREDUCE-5875.v09.patch
>
>
> Currently, counter limits "mapreduce.job.counters.*" handled by 
> {{org.apache.hadoop.mapreduce.counters.Limits}} are initialized 
> asymmetrically: on the client side, and on the AM, job.xml is ignored whereas 
> it's taken into account in YarnChild.
> It would be good to make the Limits job-configurable, such that max 
> counters/groups is only increased when needed. With the current Limits 
> implementation relying on static constants, it's going to be challenging for 
> tools that submit jobs concurrently  without resorting to class loading 
> isolation.
> The patch that I am uploading is not perfect but demonstrates the issue. 



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