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https://issues.apache.org/jira/browse/MAPREDUCE-5653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15943127#comment-15943127
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Kuhu Shukla commented on MAPREDUCE-5653:
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Thank you so much [~aw] for the explanation. I too had my doubts whether this
change will break a lot of users if we backported the patch but I agree that
this change belongs to 3.x line.
> DistCp does not honour config-overrides for mapreduce.[map,reduce].memory.mb
> ----------------------------------------------------------------------------
>
> Key: MAPREDUCE-5653
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5653
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: distcp
> Affects Versions: 0.23.9, 2.2.0
> Reporter: Mithun Radhakrishnan
> Assignee: Ratandeep Ratti
> Fix For: 3.0.0-alpha1
>
> Attachments: MAPREDUCE-5653.branch-0.23.patch,
> MAPREDUCE-5653.branch-2.patch, MAPREDUCE-5653.trunk.2.patch,
> MAPREDUCE-5653.trunk.patch
>
>
> When a DistCp job is run through Oozie (through a Java action that launches
> DistCp), one sees that mapred.child.java.opts as set from the caller is
> honoured by DistCp. But, DistCp doesn't seem to honour any overrides for
> configs mapreduce.[map,reduce].memory.mb.
> Problem has been identified. I'll post a patch shortly.
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