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Date: Tue, 29 Apr 2008 17:42:55 -0700 (PDT)
From: "Raghu Angadi (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Updated: (HADOOP-2551) hadoop-env.sh needs finer granularity
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     [ https://issues.apache.org/jira/browse/HADOOP-2551?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Raghu Angadi updated HADOOP-2551:
---------------------------------

    Release Note: hadoop-env.sh supports more shell variables for finer control of command line options while launching various services like NameNode, JobTracker, DataNode.

Release note added. IMHO I don't think this needs to be in the top level release notes.

> hadoop-env.sh needs finer granularity
> -------------------------------------
>
>                 Key: HADOOP-2551
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2551
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: scripts
>            Reporter: Allen Wittenauer
>            Assignee: Raghu Angadi
>            Priority: Blocker
>             Fix For: 0.17.0
>
>         Attachments: HADOOP-2551.patch
>
>
> We often configure our HADOOP_OPTS on the name node to have JMX running so that we can do JVM monitoring.  But doing so means that we need to edit this file if we want to run other hadoop commands, such as fsck.  It would be useful if hadoop-env.sh was refactored a bit so that there were different and/or cascading HADOOP_OPTS dependent upon which process/task was being performed.  

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