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https://issues.apache.org/jira/browse/MAPREDUCE-97?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arun C Murthy reopened MAPREDUCE-97:
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With HDFS-4053 we should revisit this.
> Increase map/reduce child tasks' heapsize from current default of 200M to 512M
> ------------------------------------------------------------------------------
>
> Key: MAPREDUCE-97
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-97
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Arun C Murthy
> Assignee: Arun C Murthy
>
> I guess we should look to check why we get OOMs with 200M, I'd suspect
> io.sort.mb hogs a lot of the default 200M. However, HADOOP-1867 should be the
> right way to solve it.
> For now, I propose we bump up the child-vm default heapsize to 512M; too many
> people are getting burnt by 200M.
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