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https://issues.apache.org/jira/browse/SPARK-44005?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ruifeng Zheng resolved SPARK-44005.
-----------------------------------
Fix Version/s: 3.5.0
4.0.0
Resolution: Fixed
Issue resolved by pull request 42353
[https://github.com/apache/spark/pull/42353]
> Improve error messages for regular Python UDTFs that return non-tuple values
> ----------------------------------------------------------------------------
>
> 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
> Assignee: Allison Wang
> Priority: Major
> Fix For: 3.5.0, 4.0.0
>
>
> 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}
> Note this works when arrow is enabled. We should improve error messages for
> regular UDTFs.
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