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* feat: queue resilience — wall-clock timeouts, backpressure, --no-worker, env concurrency, shell guard Prevents stall-induced queue blockage discovered in production (OpenClaw): 1. Wall-clock timeout sweep: dead-letters active jobs exceeding 2× timeout_ms (or 2 × lockDuration × max_stalled). Catches jobs stuck while holding DB connections where FOR UPDATE SKIP LOCKED stall detection skips them. 2. Submission backpressure (maxWaiting): caps waiting jobs per name at submission time. Prevents autopilot-cycle flood when the queue is blocked. 3. --no-worker flag for autopilot: skips spawning the built-in worker child. For environments where the worker lifecycle is managed externally (systemd, Docker, OpenClaw service-manager). 4. GBRAIN_WORKER_CONCURRENCY env var: fallback for --concurrency when the worker is spawned by autopilot (which can't pass CLI flags to the child). 5. Shell job env guard with clear logging: shell handler is always registered but throws UnrecoverableError with a clear message when GBRAIN_ALLOW_SHELL_JOBS=1 is not set, instead of silently not registering. * feat: v0.19.1 Lane A — maxWaiting atomic guard, concurrency clamp, --max-waiting CLI Addresses three production-hardening findings from the CEO + Eng + Codex adversarial review of PR #379: D2/H2: maxWaiting was TOCTOU-racy — two concurrent submitters could both see waitingCount < max and both insert. Wrap the count+select+insert in pg_advisory_xact_lock keyed on (name, queue). Serializes concurrent decisions for the SAME key while leaving different keys fully parallel. Lock auto-releases on txn commit/rollback — no cleanup path to leak. Also fix the missing queue-scope bug: count and select now filter on (name, queue) not name alone, so cross-queue same-name jobs don't suppress each other. D3/H3: resolveWorkerConcurrency silently accepted NaN / 0 / negative from parseInt. `inFlight.size < NaN` is always false → worker claims nothing → silent wedge from a single-typo env var. Clamp to ≥1 with a loud stderr warning naming the bad value. D5/H5: `gbrain jobs submit` never parsed `--max-waiting N` despite the MinionJobInput field. Wire the flag with clamp [1, 100], mirror `--max-stalled`. Extract `parseMaxWaitingFlag` for unit testing. Q1: Silent coalesce was invisible by design. New src/core/minions/backpressure-audit.ts mirrors shell-audit.ts's ISO-week JSONL pattern: `~/.gbrain/audit/backpressure-YYYY-Www.jsonl`. Coalesce events write one JSONL line with (queue, name, waiting_count, max_waiting, returned_job_id, ts). Best-effort — disk-full never blocks submission. A2: `gbrain jobs smoke --wedge-rescue` new opt-in regression case. Forges a wedged-worker row state, invokes handleStalled + handleTimeouts + handleWallClockTimeouts in order, asserts only wall-clock evicts. Mirrors the v0.14.3 `--sigkill-rescue` shape. Tests: 23 new unit cases in test/minions.test.ts covering wall-clock timeout (3 cases + non-interference with handleTimeouts), maxWaiting (coalesce, clamp 0, floor, concurrent-submitter race via Promise.all, cross-queue isolation, unset fallthrough), concurrency clamp (7 cases incl. NaN/0/negative), parseMaxWaitingFlag (5 cases), backpressure audit file write. Part of v0.19.1 plan at ~/.claude/plans/ok-wintermute-wrote-this-polished-matsumoto.md Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * feat: v0.19.1 Lane B — doctor queue_health, autopilot peer probe, runbook A5 / D4: New `queue_health` check in `gbrain doctor`. Postgres-only (PGLite has no multi-process worker surface). Two subchecks, both cheap (single SELECT each, status-index-covered): - stalled-forever: any active job with started_at > 1h. Surfaces the worst offenders (top 5 by started_at ASC) with `gbrain jobs get/cancel` fix hints. The incident that motivated v0.19.1 ran 90+ min before the operator noticed. - waiting-depth: per-name waiting count exceeds threshold. Default 10, overridable via GBRAIN_QUEUE_WAITING_THRESHOLD env (D9). Signals a submitter probably needs maxWaiting set. Worker-heartbeat subcheck from the original plan dropped (D4/H4): no minion_workers table exists, and lock_until-on-active-jobs is a lossy proxy that can't distinguish idle-worker from dead-worker. Tracked as follow-up B7. A4: --no-worker peer-liveness probe in autopilot. When --no-worker is set, every cycle runs a cheap SELECT checking for any active job whose lock_until was refreshed in the last 2 minutes. After 3 consecutive idle ticks, logs a loud WARNING naming the silent-wedge vector and referencing B7 as the ground-truth follow-up. Re-arms on next live signal so the warning doesn't spam every cycle. A6: New docs/guides/queue-operations-runbook.md (one viewport, ~60 lines). "My queue looks wedged — what do I run?" in order of escalation. What each doctor subcheck means. Self-check for the --no-worker / no-worker-running footgun. CLAUDE.md: key-files updates for handleWallClockTimeouts (v0.19.0 Layer 3 kill shot), maxWaiting advisory-lock rewrite (v0.19.1 D2), queue_health doctor check (v0.19.1 D4), and backpressure-audit.ts. Tests: all 143 minions + 13 doctor unit tests pass. No new test cases required in Lane B; the doctor queue_health exercise is in the E2E verification step (needs real PG to produce meaningful stalled-forever rows). The --no-worker probe is exercised by the smoke case's wedge setup in Lane A. README: unchanged. Existing `gbrain jobs submit` examples don't show --max-stalled, so no --max-waiting precedent to extend per A6 conditional. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * chore: v0.19.1 Lane C — CHANGELOG entry, VERSION bump, remove SPEC.md VERSION: 0.19.0 → 0.19.1 (patch; bug-fix-dominant, no schema change, no new user-facing vocabulary). CHANGELOG: new v0.19.1 entry at the top with the full release-summary template per CLAUDE.md — bold two-line headline, lead paragraph, "numbers that matter" before/after table measured against the real incident, "what this means for OpenClaw users" closer, required "To take advantage of v0.19.1" block naming the worker-restart requirement, itemized changes by area, and "For contributors" section closing the loop on the stale autopilot-idempotency narrative the CEO review was based on. Mechanism reframing per D1/H1: the 18-job pile-up was NOT caused by missing idempotency (autopilot already passes `idempotency_key: autopilot-cycle:${slot}` at autopilot.ts:241). The 18 jobs were 18 DIFFERENT slots stacking up behind the wedged one. `maxWaiting` still caps the pile; the incident just wasn't about idempotency. Adversarial review caught this before ship. SPEC.md: deleted from repo root. It was Wintermute's planning artifact for the original PR, not a shipped spec. Design docs belong under docs/designs/ per repo convention; leaving one at repo root set a precedent this repo doesn't want (A7/D11). CHANGELOG + the plan file at ~/.claude/plans/ok-wintermute-wrote-this-polished-matsumoto.md are the durable artifacts. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * fix: --wedge-rescue smoke state — both stall+timeout sweeps must skip Smoke case was setting lock_until in the past, so handleStalled's requeue path fired before handleWallClockTimeouts had a chance to evict. Production scenario is "lock_until still live (worker renewing) + timeout_at disqualified" — only wall-clock matches. Single-connection smoke can't simulate a row lock held by another txn, so we force the equivalent outcome: - lock_until = now() + 30s → handleStalled skips (not a stall) - timeout_at = NULL → handleTimeouts skips (needs NOT NULL) - started_at = now() - 10s, timeout_ms=1000 → wall-clock matches (2 × timeout_ms = 2000ms threshold exceeded) Verified: SMOKE PASS — Minions healthy + wedge rescue in 0.14s. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * fix: CI failures — shell-handler tests + llms-full.txt drift Two CI failure clusters, both pre-existing but surfaced by the v0.20.3 merge: 1) test/minions-shell.test.ts — 12 failing cases. The shell handler throws UnrecoverableError when GBRAIN_ALLOW_SHELL_JOBS !== '1' (the production RCE guard at shell.ts:210). The unit tests exercise handler mechanics, not the guard, but never set the env var — so every invocation exits through the guard path instead of the code being tested. Fix: set GBRAIN_ALLOW_SHELL_JOBS=1 in beforeAll, restore in afterAll. The env-guard IS still tested separately via the test/minions.test.ts case added in v0.20.3 Lane A which toggles the var itself. 2) llms-full.txt — stale against CLAUDE.md. Key-files entries for queue.ts, doctor.ts, and the new backpressure-audit.ts updated in v0.20.3 Lane B triggered the build-llms drift guard. Regenerated via `bun run build:llms`; no behavior change, just the inlined-docs bundle catching up to source. Full test run: 2367 pass, 0 fail across 137 files. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> --------- Co-authored-by: root <root@localhost> Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Queue operations runbook
"My queue looks wedged — what do I run?" The commands below are in the order you probably want them. Shipped with v0.19.1 after a production incident where the queue held for 90+ minutes before the operator noticed.
First signal: jobs aren't running
gbrain doctor --json | jq '.checks[] | select(.name == "queue_health")'
queue_health flags two patterns:
- stalled-forever: active job whose
started_atis older than 1h. - waiting-depth: any per-name queue deeper than 10 (override via
GBRAIN_QUEUE_WAITING_THRESHOLD). Signals a missingmaxWaiting.
Triage commands
# Who's active right now?
gbrain jobs list --status active
# Who's waiting, biggest pile first?
gbrain jobs list --status waiting --limit 50
# What's wrong with a specific job?
gbrain jobs get <id>
Rescue actions (in order of escalation)
# Force-kill a single stuck job:
gbrain jobs cancel <id>
# Clear a specific job entirely (last resort):
gbrain jobs delete <id>
# Health smoke on the mechanism itself:
gbrain jobs smoke --wedge-rescue
What each subcheck means
- stalled-forever — A worker claimed a job, started executing, and has
held the row for over an hour. The wall-clock sweep evicts jobs past
2×
timeout_ms; if one's still active, either notimeout_mswas set or the sweep is newly deployed and this job predates it. Cancel it. - waiting-depth — Submitters are piling up jobs faster than workers
drain them. Set
--max-waiting Non the submission or on the programmaticqueue.add()call. If you want a taller pile, raise the threshold viaGBRAIN_QUEUE_WAITING_THRESHOLD=50 gbrain doctor.
Self-check: is a worker even running?
# If you're running autopilot with --no-worker, check that your external
# worker (systemd / Docker / OpenClaw service-manager) is alive:
gbrain jobs list --status active | head -5
If the list is empty AND your submissions keep piling up, no worker is claiming. Start one:
GBRAIN_ALLOW_SHELL_JOBS=1 gbrain jobs work --concurrency 4
Follow-ups tracked for v0.20+
- B7 —
minion_workersheartbeat table for ground-truth liveness (the--no-workerprobe and the droppedqueue_healthworker-heartbeat subcheck both need this). - B3 —
gbrain doctor --fixlearns to rescue queue wedges.