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https://issues.apache.org/jira/browse/MAPREDUCE-6343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14516038#comment-14516038
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Hao Xia commented on MAPREDUCE-6343:
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I hit the issue on CDH 5.4.0 too. I've opened a ticket there since this is not 
supposed to go in Hadoop 2.6.0.

https://issues.cloudera.org/browse/DISTRO-713

> JobConf.parseMaximumHeapSizeMB() fails to parse value greater than 2GB 
> expressed in bytes
> -----------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-6343
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6343
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 3.0.0
>            Reporter: Hao Xia
>         Attachments: parse-heap-size.patch
>
>
> It currently tries to parse the value as an integer, which blows up whenever 
> the value is greater than 2GB and expressed in bytes.



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