[GitHub] BryanCutler commented on a change in pull request #23900: [SPARK-23836][PYTHON] Add support for StructType return in Scalar Pandas UDF

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BryanCutler commented on a change in pull request #23900: [SPARK-23836][PYTHON] Add support for StructType return in Scalar Pandas UDF
URL: https://github.com/apache/spark/pull/23900#discussion_r260475577
 
 

 ##########
 File path: python/pyspark/worker.py
 ##########
 @@ -254,7 +254,12 @@ def read_udfs(pickleSer, infile, eval_type):
         timezone = runner_conf.get("spark.sql.session.timeZone", None)
         safecheck = runner_conf.get("spark.sql.execution.pandas.arrowSafeTypeConversion",
                                     "false").lower() == 'true'
-        ser = ArrowStreamPandasSerializer(timezone, safecheck)
+        # NOTE: this is duplicated from wrap_grouped_map_pandas_udf
+        assign_cols_by_name = runner_conf.get(
+            "spark.sql.legacy.execution.pandas.groupedMap.assignColumnsByName", "true")\
 
 Review comment:
   the `groupedMap` part of the conf doesn't really make sense here, but not sure if it's worth changing

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