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https://issues.apache.org/jira/browse/HADOOP-12803?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15178380#comment-15178380
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Gera Shegalov commented on HADOOP-12803:
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Good points [~jlowe]!
Regarding the conf property for main class, we can use GenericOptionParser to
populate a separate Configuration object from the command line
-Dhadoop.util.runjar.main-class=my.ToolClass, just to extract this property. We
will still pass all the args to the main class in order not to break the
backwards-compatibility. Unfortunately using conf might cause issues with
HADOOP-11048.
Introducing a runjar command for this JIRA is not worth it from my perspective.
> RunJar should allow overriding the manifest Main-Class via a cli parameter.
> ---------------------------------------------------------------------------
>
> Key: HADOOP-12803
> URL: https://issues.apache.org/jira/browse/HADOOP-12803
> Project: Hadoop Common
> Issue Type: Bug
> Components: util
> Affects Versions: 2.6.4
> Reporter: Gera Shegalov
> Assignee: Gera Shegalov
> Attachments: HADOOP-12803.001.patch
>
>
> Currently there is no way to override the main class in the manifest even
> though main class can be passed as a parameter.
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