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Posted to mapreduce-issues@hadoop.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2015/05/02 06:37:07 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=14524759#comment-14524759 ]
Hadoop QA commented on MAPREDUCE-5490:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | patch | 0m 0s | The patch command could not apply the patch during dryrun. |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12629589/MAPREDUCE-5490.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / f1a152c |
| Console output | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5539/console |
This message was 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: MAPREDUCE-5490.patch, 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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