Yicong Huang created SPARK-58354:
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             Summary: Remove unused ArrowStreamPandasSerializer base class
                 Key: SPARK-58354
                 URL: https://issues.apache.org/jira/browse/SPARK-58354
             Project: Spark
          Issue Type: Improvement
          Components: PySpark
    Affects Versions: 4.3.0
            Reporter: Yicong Huang


After all Pandas UDF serializer subclasses were removed 
(ArrowStreamPandasUDFSerializer, GroupPandasUDFSerializer, 
ArrowStreamAggPandasUDFSerializer, ApplyInPandasWithStateSerializer, 
CogroupPandasUDFSerializer, TransformWithStateInPandasSerializer), the base 
class ArrowStreamPandasSerializer is now an orphan: only its class definition 
and __repr__ remain, with no subclasses, no instantiations, and no other 
references anywhere in the Python tree. Remove the dead class.



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