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https://issues.apache.org/jira/browse/HADOOP-12451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14997359#comment-14997359
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Allen Wittenauer commented on HADOOP-12451:
-------------------------------------------
(I hope users aren't setting -Dhadoop.home.dir directly.... Ugh. Looking at
the branch-2 shell code gives me a rash.)
> Setting HADOOP_HOME explicitly should be allowed
> ------------------------------------------------
>
> Key: HADOOP-12451
> URL: https://issues.apache.org/jira/browse/HADOOP-12451
> Project: Hadoop Common
> Issue Type: Bug
> Components: scripts
> Affects Versions: 2.7.1
> Reporter: Karthik Kambatla
> Assignee: Karthik Kambatla
> Priority: Blocker
> Fix For: 2.7.2
>
> Attachments: HADOOP-12451-branch-2.1.patch,
> HADOOP-12451-branch-2.addendum-1.patch, hadoop-12451-branch-2.addendum-2.patch
>
>
> HADOOP-11464 reinstates cygwin support. In the process, it sets HADOOP_HOME
> explicitly in hadoop-config.sh without checking if it has already been set.
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