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Posted to common-issues@hadoop.apache.org by "Eli Collins (JIRA)" <ji...@apache.org> on 2011/05/18 19:58:47 UTC

[jira] [Commented] (HADOOP-6605) Add JAVA_HOME detection to hadoop-config

    [ https://issues.apache.org/jira/browse/HADOOP-6605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13035524#comment-13035524 ] 

Eli Collins commented on HADOOP-6605:
-------------------------------------

Forgot to mention testing, since the unit tests don't cover this. I verified with this change that:
# JAVA_HOME if set in conf/hadoop-env.sh takes precedence over the term env and this detection
# JAVA_HOME if set by the term env takes precedence over this detection
# JAVA_HOME is now detected if installed w/o being set explicitly, and errs out if none is detected

> 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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