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https://issues.apache.org/jira/browse/MAPREDUCE-3784?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arun C Murthy reassigned MAPREDUCE-3784:
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Assignee: Arun C Murthy
> maxActiveApplications(|PerUser) per queue is too low for small clusters
> -----------------------------------------------------------------------
>
> Key: MAPREDUCE-3784
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3784
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 0.23.1
> Reporter: Ramya Sunil
> Assignee: Arun C Murthy
>
> We ran into this issue while testing on small clusters.
> On a 7node cluster with 8G per node, for a queue with absolute capacity 30%,
> user limit 100%, maxActiveApplications and maxActiveApplicationsPerUser is
> calculated to be 1.
> This means that even though the queue has 17GB(0.3*8*7), only 1 user can run
> 1 app at a given time queuing up rest of the apps/users. This hurts
> performance on small clusters.
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