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https://issues.apache.org/jira/browse/MAPREDUCE-6209?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14280793#comment-14280793
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Gera Shegalov commented on MAPREDUCE-6209:
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Karthik's comment captures my intention. Added "proportional to the job size"
to the title for clarification.
> Implement a heuristic to auto-size Java heap of MRAppMaster container
> proportional to the job size
> --------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-6209
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6209
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: applicationmaster
> Reporter: Gera Shegalov
>
> The size of Java heap required by the AM is linearly proportional to the size
> of the MR job (number of mappers/splits and reducers). it would be nice if
> users did not have to adjust the AM container size when transitioning from
> testing job on a small sample to a production job on a full-scale dataset.
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