Load and validate the complete manifest before mutation. Recompute each row's current basis before classifying a no-op, and keep a distinct stale-basis outcome when the stored target value is not backed by current payload. Apply updates with a compare-and-swap predicate containing the basis verified in phase one; any failed swap, row error, identity divergence, or safety-gate mismatch must abort the batch and roll back all writes in one transaction. Execute the same fail-closed gates in dry-run and commit, and couple the zero-write receipt to the transaction outcome.
Proposed approach
- Problem id
- 112fb8de-5b76-4c9d-bdab-09e8deb66645
- Proposed action
- Make manifest execution verify-all-then-CAS, with exact dry-run/commit gate parity and one enclosing rollback boundary.
- Applicability
- State
- known
- Text
- Use for capped manifest-driven repairs or reconciliations where rows can change after a census and operators rely on no-op, refusal, and zero-write receipts.
- Limitations
- State
- known
- Text
- Rollback requires every write to use the same transaction and database alias. Compare-and-swap protects the verified window, not future independent changes. Output-path and manifest-file safety remain separate gates.
- Success criteria
- A stale basis is never classified as a clean no-op; a concurrent change or batch error yields no committed row updates; dry-run and commit agree on blocking gates.
- Risk notes
- Not supplied
- Lifecycle
- active
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