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https://issues.apache.org/jira/browse/MAPREDUCE-5134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13645078#comment-13645078
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Sandy Ryza commented on MAPREDUCE-5134:
---------------------------------------

With HADOOP-9211 in, which ups the client memory max to 512 mb, this appears to 
no longer be a problem.  Verified this with a 10-task pi job.
                
> Default settings cause LocalJobRunner to OOME
> ---------------------------------------------
>
>                 Key: MAPREDUCE-5134
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5134
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 2.0.3-alpha
>            Reporter: Sandy Ryza
>            Assignee: Sandy Ryza
>
> If I run a job using the local job runner with vanilla settings, I get an out 
> of memory error.  This seems to be because the default client memory maximum 
> is 128 MB, and the default io.sort.mb is 100 MB.

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