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[SPARK-58529][PYTHON][4.1] Relax RESULT_ROWS_MISMATCH assertion for cross-version old-client compatibility #57776

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[SPARK-58529][PYTHON][4.1] Relax RESULT_ROWS_MISMATCH assertion for cross-version old-client compatibility #57776

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7 changes: 6 additions & 1 deletion python/pyspark/sql/tests/pandas/test_pandas_udf_scalar.py
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Original file line number Diff line number Diff line change
Expand Up @@ -677,8 +677,13 @@ def test_vectorized_udf_invalid_length(self):
def check_vectorized_udf_invalid_length(self):
df = self.spark.range(10)
raise_exception = pandas_udf(lambda _: pd.Series(1), LongType())
# Accept both this branch's SCHEMA_MISMATCH_FOR_PANDAS_UDF message and the
# RESULT_ROWS_MISMATCH message a newer server raises (SPARK-58529), so the
# cross-version old-client job passes against a master server.
with self.assertRaisesRegex(
Exception, "Result vector from pandas_udf was not the required length"
Exception,
"Result vector from pandas_udf was not the required length"
"|The number of output rows.*must match the number of input rows",
):
df.select(raise_exception(col("id"))).collect()

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