Github user ueshin commented on a diff in the pull request:
https://github.com/apache/spark/pull/18732#discussion_r141804329
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/RelationalGroupedDataset.scala ---
@@ -435,6 +435,29 @@ class RelationalGroupedDataset protected[sql](
df.logicalPlan.output,
df.logicalPlan))
}
+
+ private[sql] def flatMapGroupsInPandas(
+ expr: PythonUDF
+ ): DataFrame = {
--- End diff --
nit: We can make this one line.
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