HyukjinKwon commented on code in PR #36113:
URL: https://github.com/apache/spark/pull/36113#discussion_r845792114
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sql/core/src/main/scala/org/apache/spark/sql/execution/SparkStrategies.scala:
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@@ -571,9 +571,14 @@ abstract class SparkStrategies extends
QueryPlanner[SparkPlan] {
resultExpressions,
planLater(child)))
- case PhysicalAggregation(_, _, _, _) =>
+ case PhysicalAggregation(_, aggExpressions, _, _) =>
+ var groupAggPandasUDFNames = Set[String]()
+ aggExpressions.foreach(expr => if (expr.isInstanceOf[PythonUDF]) {
+ groupAggPandasUDFNames += expr.asInstanceOf[PythonUDF].name
+ })
// If cannot match the two cases above, then it's an error
- throw
QueryCompilationErrors.cannotUseMixtureOfAggFunctionAndGroupAggPandasUDFError()
+ throw
QueryCompilationErrors.cannotUseMixtureOfAggFunctionAndGroupAggPandasUDFError(
+ "<" + groupAggPandasUDFNames.mkString(",") + ">")
Review Comment:
I think we should add a space in `mkString` like `mkString(", ")`
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