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https://issues.apache.org/jira/browse/HADOOP-6605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13035609#comment-13035609
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Daryn Sharp commented on HADOOP-6605:
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-1: Only in that I don't like the logic as it would apply to OS X, but I do
really like the concept. Minor point is /Library/Java/Home was deprecated in
10.5 in favor of /usr/libexec/java_home. Ignoring that, if for some reason I
had a copy of java in any of the myriad of directories listed prior to
/Library/Java/Home, then this patch will pick that (wrong) version of java,
instead of the one I set in "Java Preferences".
> Add JAVA_HOME detection to hadoop-config
> ----------------------------------------
>
> Key: HADOOP-6605
> URL: https://issues.apache.org/jira/browse/HADOOP-6605
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Chad Metcalf
> Assignee: Eli Collins
> Priority: Minor
> Fix For: 0.22.0
>
> Attachments: HADOOP-6605.patch, hadoop-6605-1.patch
>
>
> The commands that source hadoop-config.sh currently bail with an error if
> JAVA_HOME is not set. Let's detect JAVA_HOME (from a list of locations on
> various OS types) if JAVA_HOME is not already set by hadoop-env.sh or the
> environment. This way users don't have to manually configure it.
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