Github user ueshin commented on a diff in the pull request:
https://github.com/apache/spark/pull/19872#discussion_r157948426
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/python/ExtractPythonUDFs.scala
---
@@ -48,29 +48,46 @@ object ExtractPythonUDFFromAggregate extends
Rule[LogicalPlan] {
}.isDefined
}
+ private def isPandasGroupAggUdf(expr: Expression): Boolean = expr match {
+ case PythonUDF(_, _, _, _, PythonEvalType.SQL_PANDAS_GROUP_AGG_UDF)
=> true
+ case Alias(child, _) => isPandasGroupAggUdf(child)
+ case _ => false
+ }
+
+ private def hasPandasGroupAggUdf(agg: Aggregate): Boolean = {
+ val actualAggExpr =
agg.aggregateExpressions.drop(agg.groupingExpressions.length)
+ actualAggExpr.exists(isPandasGroupAggUdf)
+ }
+
+
--- End diff --
nit: remove an extra line.
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