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https://issues.apache.org/jira/browse/MAPREDUCE-4659?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sandy Ryza updated MAPREDUCE-4659:
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Attachment: MAPREDUCE-4659-2.patch
Fix for Hadoop 2
> Confusing output when running "hadoop version" from one hadoop installation
> when HADOOP_HOME points to another
> --------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-4659
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4659
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: client
> Affects Versions: 0.20.2, 2.0.1-alpha
> Reporter: Sandy Ryza
> Attachments: MAPREDUCE-4659-2.patch, MAPREDUCE-4659.patch
>
>
> Hadoop version X is downloaded to ~/hadoop-x, and Hadoop version Y is
> downloaded to ~/hadoop-y. HADOOP_HOME is set to hadoop-x. A user running
> hadoop-y/bin/hadoop might expect to be running the hadoop-y jars, but,
> because of HADOOP_HOME, will actually be running hadoop-x jars.
> "hadoop version" could help clear this up a little by reporting the current
> HADOOP_HOME.
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