 pingqiuandClaude Opus 4.6
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c89709e47e
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feat: add WAL history model and recoverability proof (Phase 04 P3)
Adds minimal historical-data prototype to enginev2:
- WALHistory: retained-prefix model with Append, Commit, AdvanceTail,
Truncate, EntriesInRange, IsRecoverable, StateAt
- MakeHandshakeResult connects WAL state to outcome classification
- RecordTruncation execution API for divergent tail cleanup
- CompleteSessionByID gates on truncation when required
- Zero-gap requires exact equality (FlushedLSN == CommittedLSN)
- Replica-ahead classified as CatchUp with mandatory truncation
15 new tests: WAL basics, provable recoverability, unprovable gap,
exact boundary, truncation enforcement, WAL-backed end-to-end
recovery with data verification.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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2026-03-28 11:29:27 -07:00 |
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pingqiuandClaude Opus 4.6
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edec7098e8
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feat: add V2 protocol simulator and enginev2 sender/session prototype
Adds sw-block/ directory with:
- distsim: protocol correctness simulator (96 tests)
- cluster model with epoch fencing, barrier semantics, commit modes
- endpoint identity, control-plane flow, candidate eligibility
- timeout events, timer races, same-tick ordering
- session ownership tracking with ID-based stale fencing
- enginev2: standalone V2 sender/session implementation (63 tests)
- per-replica Sender with identity-preserving reconciliation
- RecoverySession with FSM phase transitions and session ID
- execution APIs: BeginConnect, RecordHandshake, BeginCatchUp,
RecordCatchUpProgress, CompleteSessionByID — all sender-authority-gated
- recovery outcome branching: zero-gap, catch-up, needs-rebuild
- assignment-intent orchestration with epoch fencing
- design docs: acceptance criteria, open questions, first-slice spec,
protocol development process
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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2026-03-28 10:38:27 -07:00 |
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