Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/22540#discussion_r220400221 --- 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 -- I feel it's more robust to always set it, then we don't need to define the default value again at python side.
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