fix(registry): quarantine vector-sidecar load failures like passages (#677 item 3) - #689
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…677 item 3) entry_vectors/entry_passage_vectors cached whatever VectorStore::load/ PassageVectorStore::load returned unconditionally — including the empty default those return on a genuine I/O read failure, not just on a cold/never-embedded context. Once cached, that empty store stuck around for the rest of the entry's residency (until an explicit refresh or eviction), so a transient disk hiccup at load time silently and permanently degraded semantic search for that context even after the disk recovered, with no automatic retry. storage::read_sidecar_checked and VectorStore/PassageVectorStore:: load_checked keep the "nothing written yet" vs "genuine read failure" distinction the existing infallible read_sidecar/load discard (both still exist unchanged, delegating to the checked variants, so every other caller — 24 tests plus BM25's own read_sidecar call — is untouched). entry_vectors/entry_passage_vectors now mirror entry_passages' existing TTL quarantine exactly: a load failure is recorded in a new per-entry Instant (vectors_load_failure/ passage_vectors_load_failure) instead of being cached, an in-window retry answers a fresh (still uncached) empty default without touching the disk again, and once LOAD_FAILURE_RETRY elapses the next access retries for real — same still_quarantined predicate, same posture. Refs #677
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📝 WalkthroughWalkthroughサイドカー読み込みで欠落と失敗を区別します。ベクトルと段落ベクトルの失敗を一定期間検疫し、期間後に再試行します。復旧時はストアをキャッシュし、レプリカ更新時は失敗状態を消去します。 Changesサイドカー読み込み検疫
Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk: 🔵 Low · up to The PR adds quarantine and retry behavior for vector-sidecar load failures. Mergeability is otherwise reasonable, but the new regression tests should use a deterministic read failure so they reliably validate the behavior across execution environments. Sequence Diagram(s)sequenceDiagram
participant RegistryEntry
participant entry_vectors
participant VectorStore
participant SidecarStorage
RegistryEntry->>entry_vectors: ベクトルを要求
entry_vectors->>entry_vectors: 検疫期間を確認
entry_vectors->>VectorStore: load_checked(path)
VectorStore->>SidecarStorage: read_sidecar_checked(path)
SidecarStorage-->>VectorStore: 成功、欠落、またはErr(())
VectorStore-->>entry_vectors: 読み込み結果
entry_vectors-->>RegistryEntry: キャッシュ済みストアまたは一時的な空ストア
entry_vectors->>entry_vectors: 検疫後に再読み込みして成功状態をキャッシュ
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In `@src/registry/embeddings/gloss_tests.rs`:
- Around line 2721-2737:
権限変更に依存せず決定的なfs::read失敗を発生させるよう、gloss_tests.rsの2721-2737とpassage_tests.rsの1172-1191にあるstate.entry_vectorsのテストを更新してください。対象サイドカーを一時退避し、同じパスにディレクトリを作成して検証後にディレクトリを削除し、元のファイルを復元してください。
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src/embedding.rssrc/registry.rssrc/registry/embeddings.rssrc/registry/embeddings/gloss_tests.rssrc/registry/embeddings/passage_tests.rssrc/registry/replication.rssrc/storage.rs
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…inject vector-sidecar reads chmod 0o000 doesn't block a read for a root or CAP_DAC_OVERRIDE process (common in CI containers), making the two new #677 item 3 quarantine tests non-deterministic. Swapping the healthy sidecar aside and planting a directory at its path fails fs::read regardless of privilege — the same fix already documented on the PR. Refs #677
Summary
#677(#535監査由来)の最後の項目。項目1(PR #682)・項目2(PR #688)は完了済みで、本PRで#677をクローズする。問題:
entry_vectors/entry_passage_vectorsはVectorStore::load/PassageVectorStore::loadが返す結果を無条件にキャッシュしていた。このloadは読み込みエラー(一時的なディスクI/O障害)でも、まだ何も埋め込んでいない冷えたcontextでも、区別なく同じ空のdefault storeを返す。一度キャッシュされたその空storeは、明示的なrefreshかeviction以外では在留期間ずっと居座るため、ロード時の一過性ディスク障害が、ディスクが復旧した後も残りの在留期間ずっと意味的検索を静かに劣化させ続け、自動リトライも一切無かった。entry_passages(registry.rs)には既にこれと同種の障害に対するTTL検疫(still_quarantined/LOAD_FAILURE_RETRY=30秒)があるが、ベクトルsidecar側には無かった。やったこと:
storage::read_sidecar_checked/VectorStore・PassageVectorStore::load_checked: 既存のread_sidecar/loadが握りつぶしている「未書き込み(問題なし)」と「読み込み失敗(検疫すべき)」の区別を保持する新メソッド。既存のread_sidecar/load自体は変更なしでこちらに委譲するだけなので、他の全呼び出し元(テスト24箇所+BM25のread_sidecar呼び出し)は無影響。entry_vectors/entry_passage_vectors:entry_passagesと全く同じ検疫パターンに変更。読み込み失敗はvectors_load_failure/passage_vectors_load_failure(新設のEntryフィールド、passages_load_failureと同型)に記録し、キャッシュしない。検疫窓内の再アクセスはディスクに触れず未キャッシュの空defaultを返し、LOAD_FAILURE_RETRYが過ぎた次のアクセスで実際にディスクを再試行する。replica_refresh(replication.rs)の残存sidecarクリア処理に、既存のpassages_load_failureクリアと同様、新2フィールドのクリアを追加。Test plan
cargo fmtcargo clippy --all-targets --locked -- -D warningscargo nextest run --locked(3856 passed。gloss/passage双方にa_failed_..._load_is_quarantined_then_recovers回帰テストを追加、entry_passagesのa_failed_passage_load_is_quarantined_like_the_imageと同じ構成でファイル権限を使いI/O失敗を再現)cargo test --doc --lockedCloses #677
https://claude.ai/code/session_0198T2iKZ17g3tt2bdNq1ju8
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