HyukjinKwon commented on issue #24177: [SPARK-27240][PYTHON] Use pandas DataFrame for struct type argument in Scalar Pandas UDF. URL: https://github.com/apache/spark/pull/24177#issuecomment-476020790 > I think it is a little different for grouped map udfs that merge all columns into a single Pandas DataFrame Yes, you were virtually referring `wrap_grouped_map_pandas_udf` in `worker.py` IIUC, @BryanCutler? I think we should better match.
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