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https://issues.apache.org/jira/browse/YARN-9?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13454936#comment-13454936
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Robert Joseph Evans commented on YARN-9:
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{quote}Yes, you are right. But I don't think we need to support YARN_HOME
since, like Hitesh mentioned, none of the releases so far are deemed
stable.{quote}
So does that mean that we need to merge this into branch-0.23? Because I plan
on beating on 0.23 until it is "deemed stable" and it does not have this
non-backwards compatible change in it. I get that you want to clean things up
and I am OK with that. But at some point we need to start getting very serious
about maintaining backwards compatibility even on the small things.
> Rename YARN_HOME to HADOOP_YARN_HOME
> ------------------------------------
>
> Key: YARN-9
> URL: https://issues.apache.org/jira/browse/YARN-9
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Arun C Murthy
> Assignee: Vinod Kumar Vavilapalli
> Attachments: YARN-9-20120912.txt
>
>
> We should rename YARN_HOME to HADOOP_YARN_HOME to be consistent with rest of
> Hadoop sub-projects.
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