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Date: Sun, 12 Jun 2011 04:17:51 +0000 (UTC)
From: "Eli Collins (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
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Subject: [jira] [Updated] (HADOOP-7374) Don't add tools.jar to the classpath
 when running Hadoop
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     [ https://issues.apache.org/jira/browse/HADOOP-7374?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eli Collins updated HADOOP-7374:
--------------------------------

    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

> Don't add tools.jar to the classpath when running Hadoop
> --------------------------------------------------------
>
>                 Key: HADOOP-7374
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7374
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: scripts
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>             Fix For: 0.23.0
>
>         Attachments: hadoop-7374-1.patch
>
>
> bin/hadoop-config.sh (and bin/rcc) add lib/tools.jar from JAVA_HOME to the classpath. This has been there since the initial commit of bin/hadoop, but I don't think it's needed. *Executing* Hadoop does not depend on tools.jar (or other libraries only available in the JDK, not the JRE) so let's not automatically add it. Marking this as an incompatible change since a job could potentially have relied on Hadoop adding tools.jar to the CLASSPATH automatically (though such a job would not have run on a system that did not have JAVA_HOME point to a jdk). The build of course still requires a JDK.

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