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Posted to issues@spark.apache.org by "Yicong Huang (Jira)" <ji...@apache.org> on 2026/04/28 18:47:00 UTC

[jira] [Created] (SPARK-56648) Refactor SQL_SCALAR_PANDAS_UDF

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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