[SPARK] Validate generated columns custom expressions on write path #5427
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johanl-db
approved these changes
Oct 31, 2025
johanl-db
reviewed
Oct 31, 2025
| deltaLog, | ||
| "delta.generatedColumns.writeValidationFailure", | ||
| data = Map( | ||
| "errorClassName" -> e.getClass, |
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Actually: you may want to log the errorClass instead here when available for Spark exception, otherwise you'll get a very generic AnalyisisException
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Which Delta project/connector is this regarding?
Description
Add generated column expression validation on write paths, change will initially merged in logging only mode before enabling the new validation.
How was this patch tested?
Unit tests
Does this PR introduce any user-facing changes?