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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6605) Improve JAVA_HOME detection and handling in hadoop-config
Date Tue, 02 Mar 2010 01:50:06 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12839958#action_12839958
] 

Allen Wittenauer commented on HADOOP-6605:
------------------------------------------

Why doesn't this try the java that is the path?   Why doesn't this verify that $JAVA_HOME/bin/java
actually works? Shouldn't it verify that it found JDK6 or better? Why is the error message
RH-based specific? Heck, why have the "please download" message at all?  

> Improve JAVA_HOME detection and handling in hadoop-config
> ---------------------------------------------------------
>
>                 Key: HADOOP-6605
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6605
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 0.20.2
>            Reporter: Chad Metcalf
>            Assignee: Chad Metcalf
>         Attachments: HADOOP-6605.patch
>
>
> JAVA_HOME can be set in hadoop-env.sh and hadoop-config.sh should respect this. hadoop-config
will source hadoop-env after it determines a config directory. If JAVA_HOME still isn't set,
it will try to guess one from a list of Linux usual locations. If one still isn't set it will
quit with a verbose error message.

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