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https://issues.apache.org/jira/browse/SPARK-6817?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14711972#comment-14711972
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Shivaram Venkataraman commented on SPARK-6817:
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I've created a design doc for this at
https://docs.google.com/document/d/1xa8gB705QFybQD7qEe-NcZZOtkfA1YY-eVhyaXtAtOM/edit#
One thing to note in the design is that the SparkR DataFrame UDFs will be more
general than the Scala or Python versions and allow access to entire partitions
as data frames. Along with support for grouped UDFs this API should be powerful
enough to implement many complex operations.
> DataFrame UDFs in R
> -------------------
>
> Key: SPARK-6817
> URL: https://issues.apache.org/jira/browse/SPARK-6817
> Project: Spark
> Issue Type: New Feature
> Components: SparkR, SQL
> Reporter: Shivaram Venkataraman
>
> This depends on some internal interface of Spark SQL, should be done after
> merging into Spark.
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