Szehon Ho created SPARK-57331:
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Summary: Support native CDC changelog sources as input to AutoCDC
flows
Key: SPARK-57331
URL: https://issues.apache.org/jira/browse/SPARK-57331
Project: Spark
Issue Type: Improvement
Components: Declarative Pipelines
Affects Versions: 5.0.0
Reporter: Szehon Ho
Allow AutoCDC (SCD Type 1) flows in Spark Declarative Pipelines to consume
Spark native CDC (Changelog) sources directly. When a flow source is detected
as a native Changelog read, AutoCDC auto-derives its CDC semantics (delete
detection, metadata-column exclusion, and update_preimage filtering) from the
changelog contract instead of requiring the user to hand-map them. Includes
validation that the changelog read is configured for unambiguous, deterministic
reconciliation (computeUpdates for delete+insert updates, carry-over removal,
and _commit_version sequencing). Scala-first scope; Python/Connect APIs
deferred.
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