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https://issues.apache.org/jira/browse/SPARK-44816?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Herman van Hövell resolved SPARK-44816.
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Fix Version/s: 3.5.0
Resolution: Fixed
> Cryptic error message when UDF associated class is not found
> ------------------------------------------------------------
>
> Key: SPARK-44816
> URL: https://issues.apache.org/jira/browse/SPARK-44816
> Project: Spark
> Issue Type: Improvement
> Components: Connect
> Affects Versions: 3.5.0
> Reporter: Niranjan Jayakar
> Assignee: Niranjan Jayakar
> Priority: Major
> Fix For: 3.5.0
>
>
> When a Dataset API is used that either requires or is modeled as a UDF, the
> class defining the UDF/function should be uploaded to the service fist using
> the `addArtifact()` API.
> When this is not done, an error is thrown. However, this error message is
> cryptic and is not clear about the problem.
> Improve this error message to make it clear that an expected class was not
> found.
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