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https://issues.apache.org/jira/browse/SPARK-12793?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sun Rui closed SPARK-12793.
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Resolution: Later
> Support R UDF Evaluation
> ------------------------
>
> Key: SPARK-12793
> URL: https://issues.apache.org/jira/browse/SPARK-12793
> Project: Spark
> Issue Type: Sub-task
> Components: SparkR
> Affects Versions: 1.6.0
> Reporter: Sun Rui
>
> Basically follows the logic as that for Python UDF evaluation
> (org/apache/spark/sql/execution/python.scala). Will extract and reuse common
> logic between Python UDF and R UDF evaluation.
> Serialization/deserialization is different from Python UDF. R UDF will use R
> SerDe to directly serialize a batch of InternalRows into bytes (that is, in
> SerializationFormats.ROW format)
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