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From "Philip Zeyliger (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5653) DistCp does not honour config-overrides for mapreduce.[map,reduce].memory.mb
Date Thu, 12 Mar 2015 17:43:38 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14359045#comment-14359045
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Philip Zeyliger commented on MAPREDUCE-5653:
--------------------------------------------

Allen, do you think there's more than just this one Xmx passthrough that's affecting DistCP?
 There's not much smarts it needs: it's not like it's every doing anything besides copying
files.

Hadn't seen MAPREDUCE-5785.  Agree that that's an excellent direction.



> 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
>
>         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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