[SPARK-56860][PYTHON] Remove unused CogroupArrowUDFSerializer#55868
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[SPARK-56860][PYTHON] Remove unused CogroupArrowUDFSerializer#55868Yicong-Huang wants to merge 1 commit into
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HyukjinKwon
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May 14, 2026
gaogaotiantian
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May 18, 2026
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### What changes were proposed in this pull request? Delete `CogroupArrowUDFSerializer` from `python/pyspark/sql/pandas/serializers.py`. ### Why are the changes needed? `CogroupArrowUDFSerializer` is no longer used after SPARK-56312 refactored `SQL_COGROUPED_MAP_ARROW_UDF` to use `ArrowStreamCoGroupSerializer` directly. This class can be safely deleted. Part of SPARK-55384. ### Does this PR introduce _any_ user-facing change? No. ### How was this patch tested? Existing tests: `pyspark.sql.tests.arrow.test_arrow_cogrouped_map`. ### Was this patch authored or co-authored using generative AI tooling? No. Closes #55868 from Yicong-Huang/SPARK-56860/cleanup/cogroup-arrow-udf-serializer. Authored-by: Yicong Huang <17627829+Yicong-Huang@users.noreply.github.com> Signed-off-by: Hyukjin Kwon <gurwls223@apache.org> (cherry picked from commit 9940da9) Signed-off-by: Hyukjin Kwon <gurwls223@apache.org>
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What changes were proposed in this pull request?
Delete
CogroupArrowUDFSerializerfrompython/pyspark/sql/pandas/serializers.py.Why are the changes needed?
CogroupArrowUDFSerializeris no longer used after SPARK-56312 refactoredSQL_COGROUPED_MAP_ARROW_UDFto useArrowStreamCoGroupSerializerdirectly. This class can be safely deleted.Part of SPARK-55384.
Does this PR introduce any user-facing change?
No.
How was this patch tested?
Existing tests:
pyspark.sql.tests.arrow.test_arrow_cogrouped_map.Was this patch authored or co-authored using generative AI tooling?
No.