Allison Wang created SPARK-44005:
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Summary: Improve the error messages when a UDTF returns a
non-tuple value
Key: SPARK-44005
URL: https://issues.apache.org/jira/browse/SPARK-44005
Project: Spark
Issue Type: Sub-task
Components: PySpark
Affects Versions: 3.5.0
Reporter: Allison Wang
Currently, if you have a UDTF like this:
{code:java}
class TestUDTF:
def eval(self, a: int):
yield a {code}
and run the UDTF, it will fail with a confusing error message like
{code:java}
Unexpected tuple 1 with StructType {code}
We should make this error message more user-friendly.
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