Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/18732#discussion_r142578363
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/python/ExtractPythonUDFs.scala
---
@@ -111,6 +111,9 @@ object ExtractPythonUDFs extends Rule[SparkPlan] with
PredicateHelper {
}
def apply(plan: SparkPlan): SparkPlan = plan transformUp {
+ // FlatMapGroupsInPandas and be evaluated in python worker
--- End diff --
The comment seems to be wrong wording.
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