5 failure-class replay tests against real file-backed BlockVol,
exercising the full integrated path:
bridge adapter → v2bridge reader/pinner → engine planner/executor
FC1: Changed-address restart — identity preserved, old plan cancelled,
new session created. Log shows plan_cancelled + session_created.
FC2: Stale epoch after failover — sessions invalidated at old epoch,
new assignment at epoch 2 creates fresh session. Log shows
per-replica invalidation.
FC3: Real catch-up (pre-checkpoint) — engine classifies from real
RetainedHistory, zero-gap in V1 interim (committed=0 before flush).
Documents the V1 limitation explicitly.
FC4: Unrecoverable gap — after flush, if checkpoint advances, replica
behind tail gets NeedsRebuild. Documents that V1 unit test may
not advance checkpoint (flusher timing).
FC5: Post-checkpoint boundary — replica at checkpoint = zero-gap in
V1 interim. Explicitly documents the catch-up collapse boundary.
go.mod: added replace directives for sw-block engine + bridge modules.
Carry-forward (explicit):
- CommittedLSN = CheckpointLSN (V1 interim)
- FC3/FC4/FC5 limited by flusher not advancing checkpoint in unit tests
- Executor snapshot/full-base/truncate still stubs
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
pingqiu
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