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https://issues.apache.org/jira/browse/MAPREDUCE-1687?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hong Tang updated MAPREDUCE-1687:
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Attachment: mr-1687-yhadoop-20.1xx-20100423.patch
Patch that fine tunes the overload determination heuristics.
> Stress submission policy does not always stress the cluster.
> ------------------------------------------------------------
>
> Key: MAPREDUCE-1687
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1687
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: contrib/gridmix
> Reporter: Hong Tang
> Attachments: mr-1687-yhadoop-20.1xx-20100416.patch,
> mr-1687-yhadoop-20.1xx-20100423.patch
>
>
> Currently, the rough idea of stress submission policy is to continue
> submitting jobs until the pending map tasks reach 2x of the cluster capacity.
> This proves to be inadequate and we saw a large job could monopolize the
> whole cluster.
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