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From "Raghu Angadi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5961) DataNode should understand generic hadoop options
Date Tue, 02 Jun 2009 22:42:07 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5961?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12715733#action_12715733

Raghu Angadi commented on HADOOP-5961:

Thanks Jakob.

The current script is extremely basic, but gets the job done. It is more like command line
alias. Still I spend more time the script than the actual code change in DataNode. It would
take some time to write a good script and for associated help and support. We could consider
later that if there is more interest.

> DataNode should understand generic hadoop options
> -------------------------------------------------
>                 Key: HADOOP-5961
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5961
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: dfs
>            Reporter: Raghu Angadi
>            Assignee: Raghu Angadi
>         Attachments: HADOOP-5961.patch, run-datanode.sh
> DataNode should use ToolRunner to parse generic hadoop options (like -Dconfig.var=value).
Apart from being more consistent with rest of the hadoop programs, this is necessary to write
a simple script to run multiple datanodes on the same node.
> I had proposed a simple shell script to running multiple datanodes on a the user mailing
list http://www.nabble.com/Contributing-to-hadoop-td22198897.html, but it requires that DataNode
parses -D option.
> I will submit a patch and a shell script that works.

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