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Posted to mapreduce-issues@hadoop.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2014/01/16 20:01:23 UTC
[jira] [Commented] (MAPREDUCE-5490) MapReduce doesn't set the
environment variable for children processes
[ https://issues.apache.org/jira/browse/MAPREDUCE-5490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13873776#comment-13873776 ]
Hadoop QA commented on MAPREDUCE-5490:
--------------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12623439/mr-5490.patch
against trunk revision .
{color:red}-1 patch{color}. The patch command could not apply the patch.
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4324//console
This message is automatically generated.
> MapReduce doesn't set the environment variable for children processes
> ---------------------------------------------------------------------
>
> Key: MAPREDUCE-5490
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5490
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 1.2.1
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Attachments: mr-5490.patch, mr-5490.patch
>
>
> Currently, MapReduce uses the command line argument to pass the classpath to the child. This breaks if the process forks a child that needs the same classpath. Such a case happens in Hive when it uses map-side joins. I propose that we make MapReduce in branch-1 use the CLASSPATH environment variable like YARN does.
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