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https://issues.apache.org/jira/browse/MAPREDUCE-5650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13853061#comment-13853061
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Sandy Ryza commented on MAPREDUCE-5650:
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In that case I agree with you that this is a bug. MapReduce properties that
have specific versions map/reduce versions (e.g mapreduce.map.java.opts) should
ignore the generic version (e.g. mapred.child.java.opts) when the specific
versions are specified. I'd like to get some other opinions on whether this is
compatible before committing it though.
> Job fails when hprof mapreduce.task.profile.map/reduce.params is specified
> --------------------------------------------------------------------------
>
> Key: MAPREDUCE-5650
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5650
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 2.2.0
> Reporter: Gera Shegalov
> Assignee: Gera Shegalov
> Attachments: MAPREDUCE-5650.v01.patch, MAPREDUCE-5650.v02.patch
>
>
> When one uses dedicated hprof mapreduce.task.profile.map.params or
> mapreduce.task.profile.reduce.params, the profiled tasks will fail to launch
> because hprof parameters are supplied to the child jvm twice.
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