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https://issues.apache.org/jira/browse/HADOOP-5961?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12715720#action_12715720
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Jakob Homan commented on HADOOP-5961:
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+1 on the patch. Works as advertised. Is there any reason not to include the
script and integrate it with the other shell scripts? The script works fine,
but would need some validation (can only open 10 datanodes as it stands),
header file, etc. This would make it easy for other developers to use without
having to track down this JIRA months or years from now.
> 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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