Github user HyukjinKwon commented on a diff in the pull request: https://github.com/apache/spark/pull/22540#discussion_r220058070 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/arrow/ArrowUtils.scala --- @@ -131,11 +131,8 @@ object ArrowUtils { } else { Nil } - val pandasColsByPosition = if (conf.pandasGroupedMapAssignColumnssByPosition) { --- End diff -- Eh, also, I think @BryanCutler did this to send less data from JVM to Python side. Not a big deal but might better just leave as was.
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