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https://issues.apache.org/jira/browse/MAPREDUCE-5650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13852682#comment-13852682
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Gera Shegalov commented on MAPREDUCE-5650:
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[~sandyr] thanks for taking a look at the patch. Your understanding is correct.
In MRv1 (branch-1), there are no task-type-specific profile params. The change
is compatible. If the task-type-oblivious mapreduce.task.profile.params is
specified then this value is used in the absence of a more specific key.
> 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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