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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3456) $HADOOP_PREFIX/bin/yarn should set defaults for $HADOOP_*_HOME
Date Sat, 03 Dec 2011 13:15:40 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13162131#comment-13162131
] 

Hudson commented on MAPREDUCE-3456:
-----------------------------------

Integrated in Hadoop-Mapreduce-0.23-Build #114 (See [https://builds.apache.org/job/Hadoop-Mapreduce-0.23-Build/114/])
    MAPREDUCE-3456. $HADOOP_PREFIX/bin/yarn should set defaults for  $HADOOP_*_HOME (Eric
Payne via mahadev) - Merging r1209825 from trunk.

mahadev : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1209826
Files : 
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/bin/yarn

                
> $HADOOP_PREFIX/bin/yarn should set defaults for $HADOOP_*_HOME
> --------------------------------------------------------------
>
>                 Key: MAPREDUCE-3456
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3456
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.0
>            Reporter: Eric Payne
>            Assignee: Eric Payne
>            Priority: Blocker
>             Fix For: 0.23.1
>
>         Attachments: MAPREDUCE-3456.1.txt
>
>
> If the $HADOOP_PREFIX/hadoop-dist/target/hadoop-0.23.0-SNAPSHOT.tar.gz tarball is used
to distribute hadoop, all of the HADOOP components (HDFS, MAPRED, COMMON) are all under one
directory. In this use case, HADOOP_PREFIX should be set and should point to the root directory
for all components, and it should not be necessary to set HADOOP_HDFS_HOME, HADOOP_COMMON_HOME,
and HADOOP_MAPRED_HOME. However, the $HADOOP_PREFIX/bin/yarn script requires these 3 to be
set explicitly in the calling environment or it won't run.
> $HADOOP_PREFIX/bin/yarn should check if $HADOOP_PREFIX is set and, if it is, use that
value for the 3 other HADOOP_*_HOME variables.

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