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Author SHA1 Message Date
Rongsong Shen
ffeb7c2cf5 docs(raft-sim-conformance): reflect runtime fault-injection flag (vs compile-time macro) in design 2026-06-24 16:36:54 +00:00
Rongsong Shen
2b15dfb67a docs(raft-sim-conformance): fix mermaid pipe + semicolon syntax in design diagrams 
Mermaid parse errors in design.md's diagrams:
- Literal `|` in flowchart node labels is read as an edge-label delimiter:
  system-flow `term | 0` -> `term | 0`; checker `|{i:...}|` ->
  `|{i:...}|` (entity renders as a literal `|`, meaning preserved).
- `;` is a mermaid statement separator and truncated the text it appeared in:
  sequence msgs `commit_index += ; apply()` -> `commit_index advanced, apply()`
  and `(R5); halt` -> `(R5), then halt`; flowchart label `responses;<br/>` ->
  `responses,<br/>`.

Valid edge-label pipes (-->|violation|) and all `;` in prose/tables outside the
mermaid fences are unchanged. All three diagrams now render.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MSxwb2Xt5F84ATgiAZnH8V
 2026-06-24 10:43:48 +00:00
Rongsong Shen
20e59d0b42 checkpoint: bug-851 root cause + raft TLA+ conformance spec family 
Investigation & fixes (failover committed-job loss):
- root-cause bug-851 on an owned 3-node cluster: chaotic failover causes
  silent committed-prefix divergence (WAL hdr.term always 0; two leaders
  per term; no (term,lsn) reconcile). Evidence in repro-851/ + INVESTIGATION.
- live-validated fixes 848/849/850 (recovery-on-promotion, advertise real
  applied_lsn, persist-layer contiguity guard); add waldump WAL inspector.

Specs (strict raft.tla conformance — library owns the log):
- TLA-gap-analysis.md: impl vs raft/raft.tla, gaps G1-G6.
- raft-log-replication, raft-commit-safety, raft-sim-conformance: extend
  src/lib/raft to own log/commit/verification via callbacks (specs generated,
  cross-spec review passed).
- ha-term-safety: controller-side adapter + config marker (R1-R7); design done.
- config-upgrade-snapshot: R8 descoped here (deps entity-bearing-snapshots, bug-857).
- roadmap + buglog (851/854/857) + .wolf knowledge updated.
 2026-06-21 14:02:15 +00:00