Niranjan Jayakar created SPARK-44816:
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Summary: 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
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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