HyukjinKwon opened a new pull request #23739: [SPARK-26832][SQL][PYTHON] Avoid project creation per record at Python's grouped vectorized UDF URL: https://github.com/apache/spark/pull/23739 ## What changes were proposed in this pull request? Looks the projection is being created per each output record in Python's grouped vectorized function. ## How was this patch tested? Existing tests should cover.
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