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From "Hadoop QA (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 06:13:49 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4374?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13704251#comment-13704251
] 

Hadoop QA commented on MAPREDUCE-4374:
--------------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12591511/MAPREDUCE-4374-trunk.2.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-common-project/hadoop-common
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/3843//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/3843//console

This message is automatically generated.
                
> 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.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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