Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/19872#discussion_r162235628
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkStrategies.scala ---
@@ -363,6 +371,21 @@ abstract class SparkStrategies extends
QueryPlanner[SparkPlan] {
aggregateOperator
+ case PhysicalAggregation(groupingExpressions, aggExpressions,
resultExpressions, child)
+ if aggExpressions.forall(expr => expr.isInstanceOf[PythonUDF]) =>
+ val udfExpressions = aggExpressions.map(expr =>
expr.asInstanceOf[PythonUDF])
+
+ Seq(execution.python.AggregateInPandasExec(
+ groupingExpressions,
+ udfExpressions,
+ resultExpressions,
+ planLater(child)))
+
+ case PhysicalAggregation(groupingExpressions, aggExpressions,
resultExpressions, child) =>
--- End diff --
How about `case PhysicalAggregation(_) =>`?
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