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https://issues.apache.org/jira/browse/MAPREDUCE-2835?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13084447#comment-13084447
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Arun C Murthy commented on MAPREDUCE-2835:
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Tom, we purposely kept these not configurable per job (by the user) since they
would start to workaround these limits.
We saw lots of cases where users took down jobs due to this and hence it's only
configurable by admins. OTOH other limits like #groups, counter-name-len etc.
are generous enough that we never had issues, but was done to be super-safe.
> Make per-job counter limits configurable
> ----------------------------------------
>
> Key: MAPREDUCE-2835
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2835
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Affects Versions: 0.20.204.0
> Reporter: Tom White
> Assignee: Tom White
> Fix For: 0.20.205.0
>
> Attachments: MAPREDUCE-2835.patch, MAPREDUCE-2835.patch
>
>
> The per-job counter limits introduced in MAPREDUCE-1943 are fixed, except for
> the total number allowed per job (mapreduce.job.counters.limit). It would be
> useful to make them all configurable.
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