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From "Eric Payne (Assigned) (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (MAPREDUCE-3456) $HADOOP_PREFIX/bin/yarn should set defaults for $HADOOP_*_HOME
Date Wed, 30 Nov 2011 19:15:40 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-3456?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Eric Payne reassigned MAPREDUCE-3456:

    Assignee: Eric Payne
> $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
> 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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