Li Jin b2ce17b4c9 [SPARK-22274][PYTHON][SQL] User-defined aggregation functions with pandas udf (full shuffle) ... ## What changes were proposed in this pull request? Add support for using pandas UDFs with groupby().agg(). This PR introduces a new type of pandas UDF - group aggregate pandas UDF. This type of UDF defines a transformation of multiple pandas Series -> a scalar value. Group aggregate pandas UDFs can be used with groupby().agg(). Note group aggregate pandas UDF doesn't support partial aggregation, i.e., a full shuffle is required. This PR doesn't support group aggregate pandas UDFs that return ArrayType, StructType or MapType. Support for these types is left for future PR. ## How was this patch tested? GroupbyAggPandasUDFTests Author: Li Jin <ice.xelloss@gmail.com> Closes #19872 from icexelloss/SPARK-22274-groupby-agg.		2018-01-23 14:11:30 +09:00
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src	[SPARK-22274][PYTHON][SQL] User-defined aggregation functions with pandas udf (full shuffle)	2018-01-23 14:11:30 +09:00
pom.xml	[SPARK-23028] Bump master branch version to 2.4.0-SNAPSHOT	2018-01-13 00:37:59 +08:00