Yicong Huang created SPARK-57676:
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Summary: Refactor SQL_GROUPED_AGG_PANDAS_ITER_UDF
Key: SPARK-57676
URL: https://issues.apache.org/jira/browse/SPARK-57676
Project: Spark
Issue Type: Sub-task
Components: PySpark
Affects Versions: 4.3.0
Reporter: Yicong Huang
Migrate SQL_GROUPED_AGG_PANDAS_ITER_UDF off ArrowStreamAggPandasUDFSerializer
onto ArrowStreamGroupSerializer, with a dedicated worker.py function, mirroring
the Arrow path done in SPARK-56123 for SQL_GROUPED_AGG_ARROW_ITER_UDF. This is
the last consumer of ArrowStreamAggPandasUDFSerializer; removing it unblocks
deleting the serializer. No behavior change; existing tests cover it, and an
ASV benchmark comparison (GroupedAggPandasIterUDFTimeBench, added in
SPARK-57645) confirms no regression.
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