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https://issues.apache.org/jira/browse/HADOOP-5966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12716134#action_12716134
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Rajiv Chittajallu commented on HADOOP-5966:
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For job limits, Yes. Can we add similar limits per queue?

mapred.max.maps.per.queue and mapred.max.reduces.per.queue



> Option to limit max tasks started per job/queue 
> ------------------------------------------------
>
>                 Key: HADOOP-5966
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5966
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: contrib/capacity-sched
>            Reporter: Rajiv Chittajallu
>
> For jobs which call external services, (eg: distcp, crawlers) user/admin 
> should be able to control max parallel tasks spawned. There should be a 
> mechanism to cap the capacity available for a queue/job. 

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