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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4374) Fix child task environment variable config and add support for Windows
Date Wed, 10 Jul 2013 23:07:49 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4374?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13705209#comment-13705209
] 

Hudson commented on MAPREDUCE-4374:
-----------------------------------

Integrated in Hadoop-trunk-Commit #4063 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/4063/])
    MAPREDUCE-4374. Fix child task environment variable config and add support for Windows.
Contributed by Chuan Liu. (Revision 1502046)

     Result = SUCCESS
cnauroth : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1502046
Files : 
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/Shell.java
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobConf.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestMiniMRChildTask.java
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/util/Apps.java

                
> Fix child task environment variable config and add support for Windows
> ----------------------------------------------------------------------
>
>                 Key: MAPREDUCE-4374
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4374
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 3.0.0, 1-win, 2.1.0-beta
>            Reporter: Chuan Liu
>            Assignee: Chuan Liu
>            Priority: Minor
>             Fix For: 1-win
>
>         Attachments: MAPREDUCE-4374-branch-1-win-2.patch, MAPREDUCE-4374-branch-1-win.patch,
MAPREDUCE-4374-trunk.2.patch, MAPREDUCE-4374-trunk.3.patch, MAPREDUCE-4374-trunk.patch
>
>
> In HADOOP-2838, a new feature was introduced to set environment variables via the Hadoop
config 'mapred.child.env' for child tasks. There are some further fixes and improvements around
this feature, e.g. HADOOP-5981 were a bug fix; MAPREDUCE-478 broke the config into 'mapred.map.child.env'
and 'mapred.reduce.child.env'.  However the current implementation is still not complete.
It does not match its documentation or original intend as I believe. Also, by using ‘:’
(colon) and ‘;’ (semicolon) in the configuration syntax, we will have problems using them
on Windows because ‘:’ appears very often in Windows path as in “C:\”, and environment
variables are used very often to hold path names. The Jira is created to fix the problem and
provide support on Windows.

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