Bowen Li created FLINK-15588:
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Summary: check registered udf via catalog API cannot be a scala
inner class
Key: FLINK-15588
URL: https://issues.apache.org/jira/browse/FLINK-15588
Project: Flink
Issue Type: Improvement
Components: Table SQL / API
Reporter: Bowen Li
Fix For: 1.11.0
scala inner class cannot be instantiated via reflection directly. thus they
cannot be catalog functions stored as full class name.
we should check that in catalog API to make sure we remind users of it with
proper error messages
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