An Auto Loader stream with an inferred schema has run for weeks using only the default schema evolution settings. This morning, the producer adds a new column loyalty_points to the JSON files. What happens on the next micro-batch, and what does Databricks recommend operationally?
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Correct answer: Auto Loader adds loyalty_points and the stream stops with UnknownFieldException; a restart resumes it with the new schema
Reference: https://docs.databricks.com/aws/en/ingestion/cloud-object-storage/auto-loader/
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02 — The Myelin Layer · Canonical Discussion
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Official Answer (C): Auto Loader adds loyalty_points and the stream stops with UnknownFieldException; a restart resumes it with the new schema
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