Single-writer flock gate for state.db WAL safety
Cluster 103339. Data as of
Nothing open on GitHub. Fix merged in #110914 on 14 Sep 2026. Check it covers your case.
The short answer
- Known?
- Yes. 3 related items grouped here, 1 issue already closed.
- Fix event
- A fix was merged to main in PR #110914. Check it covers your case. No release data is tracked.
- Tracker
- The maintainers' tracker marks this
unresolved. That is separate from the fix event. - Still open
- Nothing open on GitHub.
A reported bug and associated fix proposal address concurrent write access to state.db, where a second process (such as doctor --fix or schema repair) can corrupt the write-ahead log. The proposed mitigation is a lazy flock-based single-writer gate to serialize access.
Open issues0
Open PRs0
Fixes on record
-
#110914 state.db maintenance from a second process refuses any live holder (doctor --fix checkpoint, schema repair; #103339 item 2)
files:
hermes_cli/doctor_state.py,hermes_state_holders.py,hermes_state_repair.py,tests/hermes_cli/test_doctor_wal_checkpoint_guard.py,tests/hermes_state/test_state_db_malformed_repair.py,tests/hermes_state/test_state_db_repair_non_destructive.py,tests/hermes_state/test_state_db_second_process_maintenance.py
1 PR closed without merging
From the close comments: done elsewhere 1
-
#109270 fix(state): implement lazy flock single-writer gate to prevent WAL corruption · done elsewhere →
9b419a2,#110914,#103339
Closed issues · 1
- Closed#103339[Bug] Second writer via `doctor --fix` / `repair_state_db_schema` / hosted_rooms still corrupts live-WAL state.db — upstream guards are fail-open; proposing a lazy flock single-writer gate (field-verified)
How this cluster was grouped
-
Link evidence (
structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference. -
Pairwise link density
0.67: the share of item pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36.1.00means every pair is linked.
Pick up a Lab task
Check whether a fix covers the open issues here, with your own agent. Bring back evidence for maintainers.
Open the LabAt a glance
- Merged PRs
- #110914
- Closed issues
- 1
- Attempts
- 1 PR closed without merging
- Fix link checked
- 14 Sep 2026