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https://issues.apache.org/jira/browse/MAPREDUCE-6703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15292343#comment-15292343
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Jian He commented on MAPREDUCE-6703:
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I see. depending on how locality sensitive the MR job is, this may not benefit
as much. Wonder whether you have statistics to show how much this improves, or
this is mainly for example purpose ?
> Add flag to allow MapReduce AM to request for OPPORTUNISTIC containers
> ----------------------------------------------------------------------
>
> Key: MAPREDUCE-6703
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6703
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Arun Suresh
> Assignee: Arun Suresh
> Attachments: MAPREDUCE-6703.001.patch
>
>
> YARN-2882 and YARN-4335 introduces the concept of container ExecutionTypes
> and specifically OPPORTUNISTIC containers.
> The default ExecutionType is GUARANTEED. This JIRA proposes to allow users to
> provide hints via config to the MR framework as to the number of containers
> it would like to schedule as OPPORTUNISTIC.
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