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https://issues.apache.org/jira/browse/SPARK-9842?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-9842.
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Resolution: Incomplete
> Push down Spark SQL UDF to datasource UDF
> -----------------------------------------
>
> Key: SPARK-9842
> URL: https://issues.apache.org/jira/browse/SPARK-9842
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 1.4.1
> Reporter: Alex Liu
> Priority: Major
> Labels: bulk-closed
>
> Since many data sources have UDF and Spark SQL has UDF as well, but it only
> filters data at Spark SQL side.
> We should create a way to allow push down Spark SQL UDF to datasource UDF.
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