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https://issues.apache.org/jira/browse/SPARK-6797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14570307#comment-14570307
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Shivaram Venkataraman commented on SPARK-6797:
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You are right that we are assuming binary compatibility across AM nodes. I 
guess its a reasonable assumption for now but we could investigate not 
requiring this in the future. BTW the source vs. binary package also affects 
what we ship to users in a release, so its a more general problem. 

> Add support for YARN cluster mode
> ---------------------------------
>
>                 Key: SPARK-6797
>                 URL: https://issues.apache.org/jira/browse/SPARK-6797
>             Project: Spark
>          Issue Type: Improvement
>          Components: SparkR
>            Reporter: Shivaram Venkataraman
>            Assignee: Sun Rui
>            Priority: Critical
>
> SparkR currently does not work in YARN cluster mode as the R package is not 
> shipped along with the assembly jar to the YARN AM. We could try to use the 
> support for archives in YARN to send out the R package as a zip file.



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