Allison Wang created SPARK-43967:
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Summary: Support Python UDTFs with empty return values
Key: SPARK-43967
URL: https://issues.apache.org/jira/browse/SPARK-43967
Project: Spark
Issue Type: Sub-task
Components: PySpark
Affects Versions: 3.5.0
Reporter: Allison Wang
Support UDTFs with empty returns, for example:
{code:java}
@udtf(returnType="a: int")
class TestUDTF:
def eval(self, a: int):
... {code}
Currently, this fails with the exception
{code:java}
TypeError: 'NoneType' object is not iterable {code}
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