[SPARK-48688][SQL] Return reasonable error when calling SQL to_avro and from_avro functions but Avro is not loaded by default #47063
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What changes were proposed in this pull request?
This PR updates the new
to_avroandfrom_avroSQL functions added in #46977 to return reasonable errors when Avro is not loaded by default.Why are the changes needed?
According to the Apache Spark Avro Data Source Guide, Avro is not loaded into Spark by default. With this change, users get reasonable error messages if they try to call the
to_avroorfrom_avroSQL functions in this case with instructions telling them what to do, rather than obscure JavaClassNotFoundExceptions.Does this PR introduce any user-facing change?
Yes, see above.
How was this patch tested?
This PR adds golden file based test coverage.
Was this patch authored or co-authored using generative AI tooling?
No GitHub copilot this time.