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Date: Wed, 10 Jul 2013 23:07:49 +0000 (UTC)
From: "Hudson (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
Message-ID: <JIRA.12595956.1340736791000.29297.1373497669662@arcas>
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Subject: [jira] [Commented] (MAPREDUCE-4374) Fix child task environment
 variable config and add support for Windows
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    [ https://issues.apache.org/jira/browse/MAPREDUCE-4374?page=3Dcom.atlas=
sian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D=
13705209#comment-13705209 ]=20

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 supp=
ort for Windows. Contributed by Chuan Liu. (Revision 1502046)

     Result =3D SUCCESS
cnauroth : http://svn.apache.org/viewcvs.cgi/?root=3DApache-SVN&view=3Drev&=
rev=3D1502046
Files :=20
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/or=
g/apache/hadoop/util/Shell.java
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/had=
oop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobConf.ja=
va
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/had=
oop-mapreduce-client-core/src/main/resources/mapred-default.xml
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/had=
oop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestM=
iniMRChildTask.java
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/s=
rc/main/java/org/apache/hadoop/yarn/util/Apps.java

               =20
> 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.pa=
tch, 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 f=
urther 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 'ma=
pred.reduce.child.env'.  However the current implementation is still not co=
mplete. It does not match its documentation or original intend as I believe=
. Also, by using =E2=80=98:=E2=80=99 (colon) and =E2=80=98;=E2=80=99 (semic=
olon) in the configuration syntax, we will have problems using them on Wind=
ows because =E2=80=98:=E2=80=99 appears very often in Windows path as in =
=E2=80=9CC:\=E2=80=9D, and environment variables are used very often to hol=
d path names. The Jira is created to fix the problem and provide support on=
 Windows.

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