FA-1492 / Concurrency / Member archive

Resolve a prepared participant after recovery: Recovery reverses a previously recorded final decision · case 02

The prepared recovery operation is admitted even though recovery reverses a previously recorded final decision.

Member previewVariant 2 · 3 implementations · 9 checks per implementation

Case contract

Return a Boolean admission decision for resolve a prepared participant after recovery. The record r must satisfy all of: r['decision_known'] in ['commit','abort']; r['transaction_identity'][0] == r['transaction_identity'][1]; r['prepare_record'] is True; r['decision_consistent'][0] is None or r['decision_consistent'][0] == r['decision_consistent'][1]; set(r['locks_retained'][0]) <= set(r['locks_retained'][1]). Extra tracing fields are ignored; validation does not mutate the record.

Why this case matters

A deterministic local contract for concurrency. Each negative fixture violates exactly one invariant. No transport timing, persistence, cryptographic verification, or full protocol implementation is claimed.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
Recovery reverses a previously recorded final decision	`true`	`false`	Failed

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