docs(gap-baseline): root-cause item 4's provider-pool stall, 8 data points - #1903
docs(gap-baseline): root-cause item 4's provider-pool stall, 8 data points#1903seonghobae wants to merge 7 commits into
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…oints Adds the "Item 4: the underlying provider-pool stall itself, root-caused" section, consolidating work spread across 8 commits on a separate branch that had drifted too far from main to merge safely (73-file, 3437-line divergent diff including deletions of files still active on main -- this PR carries only the documentation content, re-derived cleanly against current main). Direct code reading of contextual_orchestrator/orchestrator.py's TaskOrchestrator._invoke failover loop, corrected twice via Devin Review (retry math: up to 6 HTTP attempts per candidate, not 3; and why the existing circuit breaker/routing-observation state can't help -- the review sidecar boots a fresh process per CI job, so in-memory state never survives to a second request). Eight same-day, cross-repository stall data points (649.5s through 3913.0s) tracked as the pattern recurred and grew. Proposes two design directions (persist breaker state across the ephemeral sidecar boundary, or extend racing to non-equivalent fallback candidates) without implementing either -- both touch shared production routing code in contextual-orchestrator and need an explicit owner decision, particularly given docs/product-goal-directive.md's no-fixed- inference-cap policy. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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📝 WalkthroughWalkthroughProvider-pool stall의 증가하는 지연 관측값과 ChangesProvider-pool stall 분석
Estimated code review effort: 1 (Trivial) | ~3분 Merge Risk: 🔵 Low · up to This documentation-only change records the provider-pool stall root cause, but inconsistent observation dates and retry-attempt descriptions could mislead owners selecting a remediation. Correct those details before relying on this baseline for implementation decisions. Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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…hestrator#1028, 2773.8s) Second consecutive same-day instance with populated phase=response_error/ served_model=deepseek-ai/deepseek-v4-flash-0731 attribution (following the 8th point, contextual-orchestrator#1032). Caught via a ci-monitor-event; triggered the standard rerun per established procedure, no code change. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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Inline comments:
In `@docs/product-technical-gap-baseline.md`:
- Around line 2777-2779: Update the “Item 4” documentation to distinguish the
seven observations from the follow-up observation recorded on 2026-09-05, rather
than describing all eight as same-day data. Revise the trend interpretation in
the surrounding section, including the sequence description, to accurately state
the observation periods while preserving the existing findings.
- Around line 2794-2796: Update the candidate-budget description in the
documentation to match _invoke: remove the claim that it has a 4-attempt
candidate budget and state that each candidate can incur up to 6 HTTP attempts—2
outer self.client.chat() calls from the default tool_retry_attempts=1, with up
to 3 provider attempts each from max_retries=2. Do not apply the unrelated
max_attempts value from the other routing path.
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…grity rules Both contributed by a reviewing session from measurements it made today, not by this session. Recorded here because the catalog is the org's shared store and a lesson only pays off when someone other than its author can find it. Signature 8 -- same-anchor merge conflicts. The collision unit for append-heavy documents is the anchor, not the file. Measured on docs/product-technical-gap-baseline.md: #1868 merged SECOND into the same file and stayed clean because its hunk sat in a different region, while #1903 broke on sharing #1868's anchor. So a path-level claim is wrong in both directions -- it over-serializes PRs that would never have touched and fails to warn the pair that actually conflicts. Also records that `behind` is admin-mergeable with zero pushes while `dirty` is a git-level conflict that cannot be bypassed (405), so the push-free path exists for exactly one PR per anchor per round. Measurement integrity, under the KPI table. `c=$(gh api ... || echo 0)` turns a rate-limited call into a genuine-looking zero; in a real sweep that produced impossible rows (in_progress_runs=13 with running_jobs=0 AND queued_jobs=0) which were briefly explained away as "the metric oscillates" rather than read as the instrument breaking. Re-measured without the mask: min 27 / max 36 / mean 32.1, stable. Three rules follow: never let a failed call fall back to a countable value, treat a self-contradictory row as the tell, and settle a disagreement about a total by printing records rather than recounting. Every KPI in this file is a script-produced count, so these belong beside the table rather than in a separate note. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01BV96rXhqoR3tYZ9AeAVur4
[P2] 영속화만으로 적체를 해소한다는 설계 결론을 좁혀 주세요검토 HEAD는
독립 로컬 작업의 소스 지적을 다시 대조했고, CO #1004 최소 문서 수정은 “persist ... closes the gap without any quality tradeoff”와 “concrete, low-risk next step”을 검증 전 설계 후보로 바꾸고, all-open 재진입·공유 TTL·동시 probe·공급자/계정 격리 검증을 완료 조건으로 명시하는 것입니다. 기존 reliability 테스트를 확장할 때는 모든 후보 열림, 서로 다른 clock origin, 동시 probe 허용 개수를 재현해야 합니다. 전역 추론 timeout이나 더 약한 모델 racing을 해결책으로 끼워 넣지 않습니다. 실제 run |
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Seven more stall data points from today, all
Six of the seven failures are the gateway 502, each after holding a runner for the whole wait (
(The seventh, 101323388804, fails without the transport line; not counted.) Pool composition in the policy report of job 101323389369: 21 candidates, Cost framing: 50% of completed, non-cancelled Noema reviews since 10:00Z ended this way, and the six 502s together held runners for ~57 minutes for zero verdicts. Under the 60-job ceiling that is capacity taken from every other queued check, so the stall and the starvation in #1938 / signature 7 are one problem measured from two sides. No action requested from me on this PR; recording the data where the root cause lives. Generated by Claude Code |
Conflict in docs/product-technical-gap-baseline.md was two appends at the same anchor: main's "Confirmed landed and working in production — 2026-09-05" note (continuing the #1037 entry) and this branch's Item 4 section. Both kept, main's note first because it continues the entry above, Item 4 after it. No lines from main removed. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
…n candidate Addresses the P2 review on #1903 (codex-review:provider-persistence-boundary). Two claims are demoted from conclusions to a design candidate pending verification, with the boundaries that persistence alone does not cover, each verified at contextual-orchestrator@a080297: - "closes the gap without any quality tradeoff": _failover_candidates ends in `return healthy or eligible` (orchestrator.py:7971-7973), so an all-open pool is probed again however faithfully circuit state is restored; ownership of all-open re-entry vs concurrent recovery probes must be decided explicitly, and an empty return would change exploration policy rather than fix it. - "concrete, low-risk next step": _circuit_open compares time.monotonic() with the stored opened_at (:7980, written at :7999), a clock meaningful only within one host and boot, so a persisted store needs its own expiry/TTL and reconstruction rule. Completion criteria now listed: all-open re-entry ownership, shared TTL contract, concurrent-probe bound, per-provider/account isolation; reliability tests must reproduce all-open, differing clock origins, and probe count. A global inference timeout or weaker-model racing is named as a non-substitute. The reviewer's read-only probes (both candidates open -> both returned; opened_at=1000 under another clock origin stays open at 100, closes at 10000) are recorded as the confirming evidence. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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Addressed at Narrowing (commit
The "closes the gap without any quality tradeoff" sentence and the "concrete, low-risk next step" sentence are replaced; the completion criteria you listed (all-open re-entry ownership, shared TTL contract, concurrent-probe bound, per-provider/account isolation; reliability tests reproducing all-open, differing clock origins, and probe count) are stated as the candidate's completion conditions, and a global inference timeout or weaker-model racing is named as a non-substitute. Your read-only probe results are recorded as the confirming evidence. Conflict with Gate on the pushed tree: 2893 passed / 1 skipped, coverage and docstring gates unchanged (docs-only delta). |
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…it_reset_seconds Peer refinement on CO#1045, verified at contextual-orchestrator@a080297: _circuit_open resets an open circuit once time.monotonic() - opened_at >= circuit_reset_seconds (30.0, :3959, :7980-7982), so an open state persisted by one CI job has expired before the next job (minutes later, one request per process) reads it. Pre-open failure counts never decay by time (:7996), but _record_success pops the entry (:8019), so one success erases the history; and neither record function reads latency, so a slow success leaves the breaker untouched. Two completion criteria added: a replay window sized from the observed stall durations (649-3913 s) rather than the reset constant, and a timeout-vs-slow-success breakdown of the stalls, which decides whether persisted breaker state carries any signal. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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Third commit For anyone who watched this branch between roughly 16:36Z and 16:42Z: it was briefly force-pushed back to the pre-merge head |
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Merged |
…ate the six-attempt candidate budget Addresses two CodeRabbit findings on #1903: the section described nine observations as "same-day" and the sequence as "across the day" although the eighth and ninth were recorded on 2026-09-05 (the first seven on 2026-09-03); the trend sentence now names both periods. The "why this is a real gap" paragraph still said "a 4-attempt candidate budget"; it now states the arithmetic the root-cause paragraph already derives: up to six HTTP attempts per candidate (two outer self.client.chat() calls from tool_retry_attempts=1, each with up to three provider attempts from max_retries=2). Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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Summary
Adds the "Item 4: the underlying provider-pool stall itself, root-caused" section to
docs/product-technical-gap-baseline.md, documenting a real, unresolved gap incontextual-orchestrator's free-tier candidate failover:TaskOrchestrator._invoke's failover loop has no mechanism to fail fast past a candidate likely to fail again, and the existing circuit breaker /#911routing-observation state can't help because the review sidecar boots a fresh process per CI job — in-memory state never survives to benefit a second request.This content was originally developed across 8 commits on a long-lived branch (
docs/gap-baseline-item4-gateway-stall-rootcause) that, through repeatedmainmerges over several days, drifted into a 73-file/3437-line divergent diff against currentmain— including deletions of files (review_admission_controller.py,audit_codeql_default_setup_rollout.py) that are still actively maintained onmain. That branch is not safe to merge as-is. This PR carries only the actual documentation content, re-derived cleanly by splicing the final (already twice Devin-Review-corrected) section text against currentmainrather than replaying 8 sequential conflict resolutions against a moving target.Content covers:
orchestrator.py's failover loop, with two corrections already applied (the real per-candidate retry budget is up to 6 HTTP attempts, not 3; and why existing breaker/observation state structurally cannot help this specific ephemeral-process deployment shape)phase=connecting/served_model=unknownpattern with populated attributiondocs/product-goal-directive.md's no-fixed-inference-cap policyNo code changes — documentation only.
Test plan
pytest tests/test_product_technical_gap_baseline.py— 5 passed (doc contract tests)coverage run -m pytest tests— 2841 passed, 1 skipped, 21 subtestsgit diff --statconfirms single-file, doc-only change (29 insertions)🤖 Generated with Claude Code
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