Yicong Huang created SPARK-60238:
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             Summary: Migrate stateful streaming UDF eval types to the 
EvalTypeHandler pipeline
                 Key: SPARK-60238
                 URL: https://issues.apache.org/jira/browse/SPARK-60238
             Project: Spark
          Issue Type: Sub-task
          Components: PySpark
    Affects Versions: 5.0.0
            Reporter: Yicong Huang


Move the five stateful streaming eval types 
(SQL_GROUPED_MAP_PANDAS_UDF_WITH_STATE, SQL_TRANSFORM_WITH_STATE_PANDAS_UDF, 
SQL_TRANSFORM_WITH_STATE_PANDAS_INIT_STATE_UDF, 
SQL_TRANSFORM_WITH_STATE_PYTHON_ROW_UDF, 
SQL_TRANSFORM_WITH_STATE_PYTHON_ROW_INIT_STATE_UDF) from read_udfs onto the 
EvalTypeHandler pipeline, as handlers in a new pyspark.eval_handlers._stateful 
module. Each branch body moves unchanged; no user-facing or wire-format change.



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