Yicong Huang created SPARK-56648:
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Summary: Refactor SQL_SCALAR_PANDAS_UDF
Key: SPARK-56648
URL: https://issues.apache.org/jira/browse/SPARK-56648
Project: Spark
Issue Type: Sub-task
Components: PySpark
Affects Versions: 4.2.0
Reporter: Yicong Huang
Refactor SQL_SCALAR_PANDAS_UDF to use ArrowStreamSerializer as pure I/O, moving
Arrow-to-Pandas conversion logic from ArrowStreamPandasUDFSerializer into
worker.py. The wrapper handles Arrow-to-Pandas conversion via
ArrowBatchTransformer so read_udfs() can be self-contained.
Part of SPARK-55388.
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