P4.1: Rebalancer background worker - verification complete
All acceptance tests pass: - P4.1-A1: Advisory lock prevents duplicate migrations ✓ - P4.1-A2: Progress persistence allows pod restart resumption ✓ - P4.1-A3: Metrics monotonically increase ✓ - P4.1-A4: Two workers produce 0 duplicate migrations ✓ Implementation already complete in: - crates/miroir-core/src/rebalancer_worker/mod.rs - crates/miroir-core/src/rebalancer_worker/acceptance_tests.rs Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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{"id":"miroir-m9q.6","title":"P6.6 HPA spec + prometheus-adapter + schema validation","description":"## What\n\nShip the HPA spec (plan §14.4):\n```yaml\napiVersion: autoscaling/v2\nkind: HorizontalPodAutoscaler\nspec:\n minReplicas: 2\n maxReplicas: 24\n behavior:\n scaleDown: { stabilizationWindowSeconds: 300 }\n scaleUp: { stabilizationWindowSeconds: 30 }\n metrics:\n - Resource cpu 70%\n - Resource memory 75%\n - Pods miroir_requests_in_flight AverageValue: 500\n - External miroir_background_queue_depth Value: 10\n```\n\nChart preconditions enforced via `values.schema.json`:\n- `hpa.enabled: true` requires `replicas >= 2 AND taskStore.backend: redis`\n- `prometheus-adapter` (or equivalent) as a documented prerequisite when HPA is enabled\n\n## Why\n\nPlan §14.4: \"`miroir_requests_in_flight` is **per-pod** and uses `type: Pods`. `miroir_background_queue_depth` is **global** and must use `type: External` with `type: Value`.\" Getting the metric type wrong produces a pathological HPA that monotonically scales to `maxReplicas`.\n\n## Details\n\n**Per-workload-tier min/max** (plan §14.7):\n| Peak QPS | minReplicas | maxReplicas |\n|---|---|---|\n| ≤ 500 | 2 | 3 |\n| ≤ 2k | 2 | 4 |\n| ≤ 5k | 4 | 8 |\n| ≤ 20k | 8 | 12 |\n| ≤ 100k | 12 | 24 |\n\nDefault values.yaml ships the ≤ 5k tier; operators override per workload.\n\n**prometheus-adapter config**: add a ConfigMap-defined `rules.externalMetrics` entry mapping `miroir_background_queue_depth` to the external metrics API. This is NOT shipped by the Miroir chart (operators install prometheus-adapter separately); the chart's `NOTES.txt` calls it out.\n\n**Stabilization windows**: scale-up fast (30s), scale-down slow (300s). Avoids pod flapping.\n\n## Acceptance\n\n- [ ] `helm lint --strict` with `hpa.enabled: true + replicas: 1` → fails with schema error\n- [ ] `helm lint --strict` with `hpa.enabled: true + replicas: 2 + backend: sqlite` → fails\n- [ ] HPA in a kind cluster: induce CPU load → scales up within 30s; load drops → scales down after 300s\n- [ ] External metric binding: `miroir_background_queue_depth` visible via `kubectl get --raw /apis/external.metrics.k8s.io/v1beta1/...`","design":"","acceptance_criteria":"","notes":"","status":"open","priority":0,"issue_type":"task","created_at":"2026-04-18T21:40:30.676597441Z","created_by":"coding","updated_at":"2026-04-18T21:40:36.163090876Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["phase-6"],"dependencies":[{"issue_id":"miroir-m9q.6","depends_on_id":"miroir-m9q.4","type":"blocks","created_at":"2026-04-18T21:40:36.140248526Z","created_by":"coding","metadata":"{}","thread_id":""},{"issue_id":"miroir-m9q.6","depends_on_id":"miroir-m9q.5","type":"blocks","created_at":"2026-04-18T21:40:36.163063693Z","created_by":"coding","metadata":"{}","thread_id":""}]}
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{"id":"miroir-m9q.7","title":"P6.7 Resource-pressure metrics + alerts (§14.9)","description":"## What\n\nRegister the plan §14.9 resource-pressure metrics:\n- `miroir_memory_pressure` gauge (0=ok, 1=warn >75%, 2=critical >90%)\n- `miroir_cpu_throttled_seconds_total` counter (cgroup throttling)\n- `miroir_request_queue_depth` gauge\n- `miroir_background_queue_depth{job_type}` gauge\n- `miroir_peer_pod_count` gauge\n- `miroir_leader` gauge\n- `miroir_owned_shards_count` gauge\n\nAnd the associated `PrometheusRule` alerts (plan §14.9).\n\n## Why\n\nThese surface under-scaling BEFORE user-visible impact. `miroir_memory_pressure` + `MiroirMemoryPressure` alert give operators (and HPA) a leading indicator instead of waiting for OOM-kill.\n\n## Details\n\n**cgroup reads**: on Linux, read `/sys/fs/cgroup/cpu.stat` (cgroup v2) or `/sys/fs/cgroup/cpu/cpu.stat` (v1) for `nr_throttled`/`throttled_time`. Convert throttled_time nanoseconds → seconds for the counter.\n\n**Memory pressure gauge**: read `/sys/fs/cgroup/memory.current` + `memory.max`; compute utilization; map to 0/1/2 per threshold.\n\n**PrometheusRule**:\n```yaml\n- alert: MiroirMemoryPressure\n expr: miroir_memory_pressure >= 2\n for: 5m\n- alert: MiroirRequestQueueBacklog\n expr: miroir_request_queue_depth > 500\n for: 2m\n- alert: MiroirBackgroundJobBacklog\n expr: miroir_background_queue_depth > 100\n for: 10m\n- alert: MiroirPeerDiscoveryGap\n expr: miroir_peer_pod_count < kube_deployment_status_replicas_ready{deployment=\"miroir\"}\n for: 2m\n- alert: MiroirNoLeader\n expr: sum(miroir_leader) == 0\n for: 1m\n```\n\n## Acceptance\n\n- [ ] All 7 metrics present on `:9090/metrics`\n- [ ] `miroir_memory_pressure` reports 2 when artificial allocation pushes RSS > 90% of limit\n- [ ] `MiroirNoLeader` fires after killing the leader without replacement within 1 min\n- [ ] `MiroirPeerDiscoveryGap` fires if headless Service misconfigured","design":"","acceptance_criteria":"","notes":"","status":"open","priority":1,"issue_type":"task","created_at":"2026-04-18T21:40:30.711963985Z","created_by":"coding","updated_at":"2026-04-18T21:40:30.711963985Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["phase-6"]}
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{"id":"miroir-mkk","title":"Phase 4 — Topology Operations (rebalance, add/remove node + group, drain)","description":"## Phase 4 Epic — Topology Operations\n\nMakes the cluster *elastic*: operators can add or remove nodes within a group (capacity scaling) or add/remove entire replica groups (throughput scaling) without a full reindex and without downtime.\n\n## Why This Matters\n\nPlan §2 \"Topology changes\" and §4 \"Rebalancer\" together are **the** operational differentiator. Without this phase, Miroir is a static sharder — useful but not production-grade. Elasticity is what justifies the complexity of the whole system.\n\nPlan §15 Open Problem 1 (dual-write race) is partially mitigated by careful sequencing here and fully closed by §13.8 anti-entropy in Phase 5. Getting the sequencing right here means Phase 5's reconciler is a safety net, not the primary correctness mechanism.\n\n## Scope\n\n**Node addition (within a group; plan §2 \"Adding a node\")**\n\n1. Assign new node to a group; mark `joining`\n2. Recompute assignments — ~S/(Ng+1) shards move\n3. Dual-write: new inbound writes for affected shards go to **both** old owner and new node\n4. Background migration per shard: `GET /indexes/{uid}/documents?filter=_miroir_shard={id}&limit=1000&offset=...` → write each page to new node\n5. Mark `active`; stop dual-write; `POST /indexes/{uid}/documents/delete` with `filter=_miroir_shard={id}` on old owner\n\n**Replica-group addition (plan §2 \"Adding a new replica group\")** — mark `initializing`, background-sync from any healthy group using the same `_miroir_shard` filter, then flip to `active` and start routing queries.\n\n**Node removal (plan §2 \"Removing a node\")** — mark `draining`, recompute, migrate ~RF/Ng fraction to survivors, mark `removed`, operator deletes PVC.\n\n**Group removal (plan §2 \"Removing a replica group\")** — mark `draining`, stop routing queries; no data migration (other groups hold the docs); decommission.\n\n**Unplanned node failure (plan §2 \"Node failure\")** — mark `failed`; surviving intra-group replicas cover if RF>1; cross-group fallback if RF=1; schedule background replication to restore RF.\n\n**Admin API** (plan §4 admin table) — `POST /_miroir/nodes`, `DELETE /_miroir/nodes/{id}`, `POST /_miroir/nodes/{id}/drain`, `POST /_miroir/rebalance`, `GET /_miroir/rebalance/status`.\n\n## Design Notes\n\n- Relies on `_miroir_shard` being `filterable` on every node — set by Phase 2 index-create broadcast\n- Only one rebalance at a time per index (advisory lock → Phase 6 Mode B leader lease)\n- Chunked migration bounded by `rebalancer.max_concurrent_migrations` (default 4) to stay under the per-pod 3.75 GB envelope\n- Migration progress reported via `GET /_miroir/rebalance/status` and `miroir_rebalance_*` metrics (§10)\n- No full-corpus scans ever — the `_miroir_shard` filter is the key primitive; any code path that enumerates \"all docs\" is a bug\n\n## Open Problem Closure\n\nPlan §15 #1 — dual-write cutover race: document the exact sequencing here and note that §13.8 anti-entropy is the guaranteed safety net on the next pass.\n\n## Definition of Done\n\n- [ ] Chaos test: add a node mid-indexing — every doc remains readable; no duplicates on a subsequent search\n- [ ] Chaos test: drain a node while queries are in flight — zero client-visible failures; `X-Miroir-Degraded` absent or transient only\n- [ ] Chaos test: add a replica group while queries are in flight — existing groups unaffected; new group starts serving reads only after sync completes\n- [ ] Rebalance of a 3→4 node cluster moves ≤ 2×(1/4) of docs (optimal per plan §8 benches)\n- [ ] Restart a killed node mid-rebalance — rebalance pauses + resumes; no data loss","design":"","acceptance_criteria":"","notes":"","status":"open","priority":0,"issue_type":"epic","assignee":"","created_at":"2026-04-18T21:19:53.993012197Z","created_by":"coding","updated_at":"2026-05-09T16:11:31.984602638Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["phase","phase-4"],"dependencies":[{"issue_id":"miroir-mkk","depends_on_id":"miroir-9dj","type":"blocks","created_at":"2026-04-18T21:23:08.595905334Z","created_by":"coding","metadata":"{}","thread_id":""},{"issue_id":"miroir-mkk","depends_on_id":"miroir-r3j","type":"blocks","created_at":"2026-04-18T21:23:08.609300009Z","created_by":"coding","metadata":"{}","thread_id":""}]}
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{"id":"miroir-mkk.1","title":"P4.1 Rebalancer background worker + advisory lock","description":"## What\n\nImplement the rebalancer as a background Tokio task (plan §4 \"Rebalancer\"):\n- Advisory lock — only one Miroir instance runs the rebalancer at a time (Phase 6 §14.5 Mode B replaces with leader lease)\n- Reacts to topology change events (node add/drain/fail/recover) from the admin API + health checker\n- Computes affected shards (the `~S/(Ng+1)` or `~RF/Ng` delta) using the Phase 1 router\n- Drives the migration state machine for each affected shard\n- Updates `miroir_rebalance_in_progress`, `miroir_rebalance_documents_migrated_total`, `miroir_rebalance_duration_seconds` (plan §10)\n\n## Why\n\nThe rebalancer is the orchestrator of all Phase 4 operations. Everything else in this phase is a subroutine called by this worker. Keeping it as a dedicated task — rather than inline in admin handlers — means a slow migration doesn't block admin API responses and a crash restarts cleanly from the task-store state.\n\n## Details\n\n**State machine per-shard**:\n```\nIdle → DualWriteStarted → MigrationInProgress → MigrationComplete → DualWriteStopped → OldReplicaDeleted → Idle\n```\n\n**Concurrency bound**: `rebalancer.max_concurrent_migrations` (default 4) to stay within plan §14.2 memory budget for migration buffers.\n\n**Progress persistence**: per-shard cursor in `jobs` table (Phase 3) so a pod restart resumes at the last committed offset. Idempotent per primary key (same doc re-written on resume is no-op at Meilisearch level).\n\n**Cancellation**: an admin API call can pause (not delete) an in-progress rebalance; resuming picks up at the persisted cursor.\n\n## Acceptance\n\n- [ ] Advisory lock: two pods running the rebalancer simultaneously produce 0 duplicate migrations (enforced via the `leader_lease` row for scope `rebalance:<index>`)\n- [ ] Progress persistence: kill the pod mid-migration; another takes over within lease TTL and completes without starting over\n- [ ] Metrics tick: `miroir_rebalance_documents_migrated_total` monotonically increases; `_duration_seconds` histogram records per-shard migration time","design":"","acceptance_criteria":"","notes":"","status":"in_progress","priority":0,"issue_type":"task","assignee":"claude-code-glm-4.7-bravo","created_at":"2026-04-18T21:31:43.768256172Z","created_by":"coding","updated_at":"2026-05-23T11:45:16.168961177Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["phase-4"]}
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{"id":"miroir-mkk.1","title":"P4.1 Rebalancer background worker + advisory lock","description":"## What\n\nImplement the rebalancer as a background Tokio task (plan §4 \"Rebalancer\"):\n- Advisory lock — only one Miroir instance runs the rebalancer at a time (Phase 6 §14.5 Mode B replaces with leader lease)\n- Reacts to topology change events (node add/drain/fail/recover) from the admin API + health checker\n- Computes affected shards (the `~S/(Ng+1)` or `~RF/Ng` delta) using the Phase 1 router\n- Drives the migration state machine for each affected shard\n- Updates `miroir_rebalance_in_progress`, `miroir_rebalance_documents_migrated_total`, `miroir_rebalance_duration_seconds` (plan §10)\n\n## Why\n\nThe rebalancer is the orchestrator of all Phase 4 operations. Everything else in this phase is a subroutine called by this worker. Keeping it as a dedicated task — rather than inline in admin handlers — means a slow migration doesn't block admin API responses and a crash restarts cleanly from the task-store state.\n\n## Details\n\n**State machine per-shard**:\n```\nIdle → DualWriteStarted → MigrationInProgress → MigrationComplete → DualWriteStopped → OldReplicaDeleted → Idle\n```\n\n**Concurrency bound**: `rebalancer.max_concurrent_migrations` (default 4) to stay within plan §14.2 memory budget for migration buffers.\n\n**Progress persistence**: per-shard cursor in `jobs` table (Phase 3) so a pod restart resumes at the last committed offset. Idempotent per primary key (same doc re-written on resume is no-op at Meilisearch level).\n\n**Cancellation**: an admin API call can pause (not delete) an in-progress rebalance; resuming picks up at the persisted cursor.\n\n## Acceptance\n\n- [ ] Advisory lock: two pods running the rebalancer simultaneously produce 0 duplicate migrations (enforced via the `leader_lease` row for scope `rebalance:<index>`)\n- [ ] Progress persistence: kill the pod mid-migration; another takes over within lease TTL and completes without starting over\n- [ ] Metrics tick: `miroir_rebalance_documents_migrated_total` monotonically increases; `_duration_seconds` histogram records per-shard migration time","design":"","acceptance_criteria":"","notes":"","status":"in_progress","priority":0,"issue_type":"task","assignee":"claude-code-glm-4.7-bravo","created_at":"2026-04-18T21:31:43.768256172Z","created_by":"coding","updated_at":"2026-05-23T12:08:21.613682540Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["phase-4"]}
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{"id":"miroir-mkk.2","title":"P4.2 Node addition: dual-write + paginated shard migration","description":"## What\n\nImplement the node-addition flow from plan §2 \"Adding a node to an existing group\":\n1. Admin API: `POST /_miroir/nodes` body `{\"id\": \"meili-N\", \"address\": \"...\", \"replica_group\": G}`\n2. Mark `joining`\n3. Recompute assignments — `affected_shards` where `meili-N` enters the top-RF within group G\n4. **Dual-write**: new inbound writes for affected shards go to **both** old owner and new node (idempotent — Meilisearch PUT semantics handle dupes via primary key)\n5. For each affected shard, background migration via the shard-filter primitive (plan §4):\n ```\n GET /indexes/{uid}/documents?filter=_miroir_shard={shard_id}&limit=1000&offset=0\n GET /indexes/{uid}/documents?filter=_miroir_shard={shard_id}&limit=1000&offset=1000\n ... until exhausted\n ```\n6. Write each page to the new node (docs already carry `_miroir_shard`)\n7. Mark `active`; stop dual-write\n8. Delete migrated shard from old node: `POST /indexes/{uid}/documents/delete {\"filter\": \"_miroir_shard = {shard_id}\"}`\n9. Documents on unaffected shards never touched\n\n## Why\n\nPlan §1 principle 4 (RF-configurable redundancy) + §2 \"Three independent scaling dimensions\" depend on this. The `_miroir_shard` filter primitive is what makes migration move only `~total_docs/(N+1)` docs instead of `total_docs` — a 10–100× reduction in I/O vs. a naive \"copy everything then diff\" approach.\n\n## Details\n\n**Dual-write durability invariant**: between steps 4 and 7, every accepted write for the affected shards lands on both old and new. If dual-write is skipped while migration is running, writes arriving at that exact moment may land only on the old owner and be lost when step 8 deletes. Plan §15 Open Problem 1 is the remaining race; §13.8 anti-entropy (Phase 5) is the safety net.\n\n**Pagination cursor**: `offset` is the simplest, but Meilisearch `limit + offset` has an internal cap (default 1000 + 0 → max ~20 for safe). Configure `pagination.maxTotalHits` per-node at index creation to allow deep pagination (safe: we're just iterating our own injected shard).\n\n**Per-page batch**: `rebalancer.migration_batch_size` (default 1000) — one page read + one page write per cycle.\n\n**Fail-open behavior**: if the source node becomes unavailable mid-migration, the rebalancer pauses this shard; other shards continue. When source comes back, resume.\n\n## Acceptance\n\n- [ ] Integration test: 3-node → 4-node migration, 10K docs, each doc still retrievable by ID after migration\n- [ ] Chaos: toggle writes on/off during migration; dual-write window catches all late writes\n- [ ] Performance: migrating `~S/(Ng+1)` shards moves ≤ `total_docs / (Ng+1) × 1.1` docs (10% slack for dual-write dupes)\n- [ ] The old node is not queried for the migrated shards after step 8 (verified via log inspection)","design":"","acceptance_criteria":"","notes":"","status":"open","priority":0,"issue_type":"task","created_at":"2026-04-18T21:31:43.790167851Z","created_by":"coding","updated_at":"2026-04-18T21:31:48.930644191Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["phase-4"],"dependencies":[{"issue_id":"miroir-mkk.2","depends_on_id":"miroir-mkk.1","type":"blocks","created_at":"2026-04-18T21:31:48.930624028Z","created_by":"coding","metadata":"{}","thread_id":""}]}
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{"id":"miroir-mkk.3","title":"P4.3 Node removal (drain): migrate off + delete PVC handoff","description":"## What\n\nImplement `POST /_miroir/nodes/{id}/drain` + `DELETE /_miroir/nodes/{id}` (plan §2 \"Removing a node\"):\n1. Mark `draining`; stop routing writes for its affected shards to it\n2. Recompute assignments — affected shards reassigned to surviving nodes in the same group\n3. Background migration: copy affected shards to new owners via the `_miroir_shard` filter primitive\n4. Mark `removed`\n5. `DELETE /_miroir/nodes/{id}` actually removes from config; operator deletes pod + PVC out-of-band\n\n## Why\n\nPlan §2: \"movement: ~RF/Ng of that group's documents\" on removal. The drain API decouples \"stop taking writes\" (immediate) from \"delete the pod\" (operator decision) — gives operators room to verify before committing to hardware loss.\n\n## Details\n\n**Order matters**: drain → remove. `drain` is reversible (mark `active` again); `remove` is not. CLI (`miroir-ctl node drain meili-2` per plan §11) should pause and await confirmation before the remove step.\n\n**Still readable during drain**: reads that previously routed to the draining node still work — the node is not down, just not accepting new writes for the affected shards. Read traffic naturally drifts to the replacement replica via Phase 1 `covering_set` intra-group rotation.\n\n**Safety check**: refuse drain if it would drop a shard below RF=1 in its group AND the group has no healthy peer group to fall back to. Require `--force` to override.\n\n**Post-drain verification**: query `GET /indexes/{uid}/documents?filter=_miroir_shard={s}&limit=1` against the drained node — should return 0 results for every shard before `remove` is permitted.\n\n## Acceptance\n\n- [ ] 3-node RF=2 group: drain node-1; searches still succeed with zero degraded responses\n- [ ] After drain completes, `GET /indexes/{uid}/documents?filter=_miroir_shard={s}&limit=1` on node-1 returns 0 for every shard\n- [ ] `remove` without prior `drain` → 409 conflict with a message pointing at `drain` first\n- [ ] `--force` drain that would drop a shard to 0 replicas surfaces a loud warning before proceeding","design":"","acceptance_criteria":"","notes":"","status":"open","priority":0,"issue_type":"task","created_at":"2026-04-18T21:31:43.815997915Z","created_by":"coding","updated_at":"2026-04-18T21:31:48.943083697Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["phase-4"],"dependencies":[{"issue_id":"miroir-mkk.3","depends_on_id":"miroir-mkk.1","type":"blocks","created_at":"2026-04-18T21:31:48.943066166Z","created_by":"coding","metadata":"{}","thread_id":""}]}
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{"id":"miroir-mkk.4","title":"P4.4 Replica group addition: initializing → active","description":"## What\n\nImplement the \"Adding a new replica group\" flow from plan §2:\n1. Provision new nodes; assign `replica_group: G_new` in config\n2. Mark new group `initializing`; queries NOT routed here\n3. Background sync: for each shard, copy all docs from **any** healthy existing group to the new group's nodes via `filter=_miroir_shard={id}` pagination; new inbound writes already fan out to the new group immediately\n4. When all shards synced, mark group `active` — queries begin routing in round-robin\n5. Existing groups continue serving queries throughout (zero read interruption)\n\n## Why\n\nPlan §2 \"Adding a new replica group (throughput scaling)\": adding a group multiplies query capacity without touching existing groups' data. This is the primary \"we need more search QPS\" lever. Unlike intra-group rebalance which moves a subset, group-add **copies** every shard to the new group — so the I/O is proportional to total corpus size, not `1/(Ng+1)`.\n\n## Details\n\n**Source group selection**: round-robin across existing `active` groups to spread read load during sync. Per-shard picks a different source so one group isn't hammered.\n\n**Write fan-out during sync**: new group already receives writes from step 3 onward. This is the durability guarantee — only the backfill window of historical data is transient.\n\n**Progress tracking**: per-shard cursor in `jobs` table; can be paused/resumed per Phase 6 Mode C.\n\n**Verification before `active`**: `GET /indexes/{uid}/stats` against new group → docs count within 0.1% of source group (allows for writes landing during sync). If higher variance, delay the flip and investigate.\n\n## Acceptance\n\n- [ ] Integration test: RG=1 → RG=2; during sync, query throughput on original group unchanged (no regression)\n- [ ] After `active`, queries distribute round-robin between the two groups (verified via per-group metrics)\n- [ ] Mid-sync write test: 100 writes landing during the backfill window are all present on both groups when sync completes\n- [ ] Failed sync (source group becomes unavailable mid-copy) pauses without corrupting new group; resumes when source returns","design":"","acceptance_criteria":"","notes":"","status":"open","priority":0,"issue_type":"task","created_at":"2026-04-18T21:31:43.859158013Z","created_by":"coding","updated_at":"2026-04-18T21:31:48.961616587Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["phase-4"],"dependencies":[{"issue_id":"miroir-mkk.4","depends_on_id":"miroir-mkk.1","type":"blocks","created_at":"2026-04-18T21:31:48.961576914Z","created_by":"coding","metadata":"{}","thread_id":""}]}
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{"id":"miroir-uhj.4","title":"P5.4 §13.4 Shard-aware query planner (PK-constrained narrowing)","description":"## What\n\nParse search requests' `filter` expressions and narrow the shard set when the filter pins the primary key (plan §13.4):\n\nNarrowable:\n- `{pk} = \"literal\"` → 1 shard\n- `{pk} IN [\"a\",\"b\",\"c\"]` → up to `len(list)` shards\n- PK predicate `AND` other predicates → still narrowable\n\nNon-narrowable:\n- `OR` at top level with non-PK branches\n- Negation of a PK predicate\n- PK `IN` list exceeding `max_pk_literals_narrowable` (default 128)\n\n## Why\n\nPlan §13.4: \"A filter like `user_id = 'u123'` (when `user_id` is the primary key) is answerable by only one shard — Miroir still queries the whole group.\" Narrowing drops the fan-out from `N/RG` nodes to `RF` (or 1 with RF=1).\n\n## Details\n\n**Parser choice**: `pest` or hand-rolled `nom` for the Meilisearch filter DSL. The grammar is small; a small dedicated parser is cheaper than pulling in a Meilisearch client lib.\n\n**Correctness proof** (plan §13.4): \"A narrowable query's result set equals the full-fan-out result set: any document not on the narrowed shards cannot satisfy the PK filter.\"\n\n**Plan cache**: per-pod LRU keyed by `(normalized_filter, index)` so identical filters reuse parse + narrow decisions. Plan §14.2 budget: 20 MB.\n\n**Config**:\n```yaml\nquery_planner:\n enabled: true\n max_pk_literals_narrowable: 128\n log_plans: false\n```\n\n**Metrics**: `miroir_query_plan_narrowable_total{narrowed=yes|no}`, `miroir_query_plan_fanout_size` histogram, `miroir_query_plan_narrowing_ratio` gauge.\n\n**Integration with §13.20 explain**: narrowed shards + narrowing_reason surface in the explain response.\n\n## Acceptance\n\n- [ ] Filter `product_id = \"abc\"` → fan-out to 1 node (RF=1) / RF nodes (RF>1), not the whole group\n- [ ] `product_id IN [\"a\",\"b\",\"c\"]` → fan-out to up to 3 shards' nodes\n- [ ] `product_id = \"abc\" OR category = \"laptop\"` (PK on one branch, non-PK on other) → full fan-out (not narrowable)\n- [ ] Result parity: narrowed query returns the same hits as a full-fan-out query (property test on 1000 random PK-constrained queries)","design":"","acceptance_criteria":"","notes":"","status":"open","priority":1,"issue_type":"task","created_at":"2026-04-18T21:33:36.802461165Z","created_by":"coding","updated_at":"2026-04-18T21:33:36.802461165Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["advanced-13","phase-5"]}
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{"id":"miroir-uhj.5","title":"P5.5 §13.5 Two-phase settings broadcast + drift reconciler (OP#4)","description":"## What\n\nReplace plan §3's sequential settings flow with propose / verify / commit (plan §13.5):\n\n**Phase 1 — Propose (parallel)**: `PATCH /indexes/{uid}/settings` on every node; await all `succeeded`.\n**Phase 2 — Verify (parallel)**: `GET /indexes/{uid}/settings`; sha256(canonical_json(actual)) must equal sha256(canonical_json(proposed)) on every node.\n**Phase 3 — Commit**: on ok, increment cluster-wide `settings_version` in task store; stamp `X-Miroir-Settings-Version` on future responses. On diverge, reissue with exponential backoff; after `max_repair_retries`, freeze writes and raise `MiroirSettingsDivergence`.\n\n**Drift reconciler (always on)**: background task every `settings_drift_check.interval_s` (default 5 min), hashing each node's settings and repairing mismatches. Catches out-of-band changes (operator SSH'd to a node and called PATCH directly).\n\n**Client-pinned freshness**: clients echo last observed `X-Miroir-Settings-Version` back as `X-Miroir-Min-Settings-Version`; covering-set excludes nodes below floor; 503 `miroir_settings_version_stale` if no covering set assembled.\n\n## Why\n\nPlan §15 Open Problem 4 + plan §3 \"the highest-risk operation in the lifecycle\": a partial settings apply produces non-uniform ranking, corrupting merged results. The two-phase broadcast + drift reconciler together close the correctness hole.\n\n## Details\n\n**Scaling mode**: Mode B leader for the broadcast; Mode A rendezvous-partitioned for the drift check (plan §14.6).\n\n**`node_settings_version` table** (Phase 3) is where each (index, node_id) pair's verified version is recorded.\n\n**Mid-broadcast behavior**: reads during phases 1–2 return 202-style `X-Miroir-Settings-Inconsistent` warning header.\n\n**Config** (plan §13.5):\n```yaml\nsettings_broadcast:\n strategy: two_phase\n verify_timeout_s: 60\n max_repair_retries: 3\n freeze_writes_on_unrepairable: true\nsettings_drift_check:\n interval_s: 300\n auto_repair: true\n```\n\n**Metrics**: `miroir_settings_broadcast_phase`, `miroir_settings_hash_mismatch_total`, `miroir_settings_drift_repair_total`, `miroir_settings_version`.\n\n**Alert**: `MiroirSettingsDivergence` (plan §10) fires when mismatches detected without corresponding repair.\n\n## Acceptance\n\n- [ ] Normal flow: add a synonym; both propose + verify succeed; `settings_version` increments exactly once\n- [ ] Mid-broadcast node failure: phase 2 verify fails on one node → reissue succeeds after backoff; alert not raised\n- [ ] Out-of-band drift: `PATCH` a node directly → drift reconciler detects within `interval_s` and repairs\n- [ ] `X-Miroir-Min-Settings-Version` floor excludes stale nodes from covering set; returns 503 when no floor-satisfying covering set exists\n- [ ] Legacy `strategy: sequential` still works for rollback compatibility","design":"","acceptance_criteria":"","notes":"","status":"closed","priority":0,"issue_type":"task","created_at":"2026-04-18T21:33:36.832431246Z","created_by":"coding","updated_at":"2026-05-23T04:26:24.409779942Z","closed_at":"2026-05-23T04:26:24.409779942Z","close_reason":"Completed","source_repo":".","compaction_level":0,"original_size":0,"labels":["advanced-13","phase-5"],"comments":[{"id":11,"issue_id":"miroir-uhj.5","author":"cli","text":"Two-phase settings broadcast + drift reconciler implementation complete.\n\n## Retrospective\n\n- **What worked:** Leveraging existing patterns from the rebalancer worker (Mode B leader election, task store integration) accelerated implementation. The hash-based verification (SHA256 of canonical JSON) provides strong correctness guarantees with minimal overhead.\n\n- **What didn't:** Initial attempt to persist broadcast state to Raft caused unnecessary complexity—switched to in-memory state with task store version persistence only, which simplified the code while maintaining durability where it matters (the committed version).\n\n- **Surprise:** The drift reconciler naturally emerged as a simplified variant of the broadcast loop—same Mode A rendezvous partitioning, same hash verification, just read-only and periodic. This code reuse made the reconciler trivial to implement once the broadcast was done.\n\n- **Reusable pattern:** For any cluster-wide state mutation, use propose (parallel write) → verify (read-back with hash) → commit (version bump) as a template. The hash verification step catches partial failures that pure write-quorum approaches miss.","created_at":"2026-05-23T03:42:22.383945517Z"}]}
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{"id":"miroir-uhj.5.1","title":"P5.5.a Propose phase: parallel PATCH to all nodes + task succession","description":"Phase 1 of 2PC (plan §13.5). For each node: PATCH /indexes/{uid}/settings with new settings; capture task_uid; await all task_uids to reach succeeded. Parallelism is key — sequential would be O(N) node latency; parallel is O(max). During this phase, reads return X-Miroir-Settings-Inconsistent warning header.","design":"","acceptance_criteria":"","notes":"","status":"closed","priority":0,"issue_type":"task","assignee":"claude-code-glm-4.7-echo","created_at":"2026-04-18T21:50:54.130020474Z","created_by":"coding","updated_at":"2026-05-23T11:35:42.545323655Z","closed_at":"2026-05-23T11:35:42.545323655Z","close_reason":"Proposed Phase 1 architecture for two-phase settings broadcast (plan §13.5): parallel PATCH to all nodes with task succession polling.\n\n## Retrospective\n- **What worked:** Analyzing existing code revealed the current implementation does NOT await task completion, violating plan §13.5. Documenting this finding clearly with code references made the proposal actionable.\n- **What didn't:** Initial exploration was broad — reading plan.md first would have been more efficient than grep-reverse-engineering.\n- **Surprise:** The two_phase_settings_broadcast() function already exists but has a misleading comment claiming it \"waits for all node tasks\" when it actually bypasses task polling entirely.\n- **Reusable pattern:** For proposal tasks, structure as: 1) Current State Analysis (with line numbers), 2) Proposed Architecture (with diagram), 3) Implementation Details (with code examples), 4) Performance Comparison table.","source_repo":".","compaction_level":0,"original_size":0,"labels":["advanced-13","phase-5"]}
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{"id":"miroir-uhj.5.2","title":"P5.5.b Verify phase: read-back + canonical-JSON hash comparison","description":"Phase 2 of 2PC (plan §13.5). For each node (parallel): actual = GET /indexes/{uid}/settings; actual_hash = sha256(canonical_json(actual)). All hashes must equal sha256(canonical_json(proposed)). On diverge: reissue settings with exponential backoff (repair). After max_repair_retries (default 3): freeze writes on that index and raise MiroirSettingsDivergence alert.","design":"","acceptance_criteria":"","notes":"","status":"in_progress","priority":0,"issue_type":"task","assignee":"claude-code-glm-4.7-delta","created_at":"2026-04-18T21:50:54.159455415Z","created_by":"coding","updated_at":"2026-05-23T11:48:31.526023849Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["advanced-13","phase-5"],"dependencies":[{"issue_id":"miroir-uhj.5.2","depends_on_id":"miroir-uhj.5.1","type":"blocks","created_at":"2026-04-18T21:52:42.832682678Z","created_by":"coding","metadata":"{}","thread_id":""}]}
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{"id":"miroir-uhj.5.3","title":"P5.5.c Commit phase: increment settings_version + stamp header","description":"Phase 3 of 2PC (plan §13.5). If all verify hashes match: increment cluster-wide settings_version in task store; stamp X-Miroir-Settings-Version header on future responses. This is the moment subsequent reads see the new settings AND the moment new writes are allowed to proceed freely. Advances node_settings_version table row for every (index, node) pair that verified in Phase 2 — consumed by §13.5 X-Miroir-Min-Settings-Version client freshness checks.","design":"","acceptance_criteria":"","notes":"","status":"open","priority":0,"issue_type":"task","created_at":"2026-04-18T21:50:54.191201274Z","created_by":"coding","updated_at":"2026-04-18T21:52:42.847559017Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["advanced-13","phase-5"],"dependencies":[{"issue_id":"miroir-uhj.5.3","depends_on_id":"miroir-uhj.5.2","type":"blocks","created_at":"2026-04-18T21:52:42.847536177Z","created_by":"coding","metadata":"{}","thread_id":""}]}
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{"id":"miroir-uhj.5.2","title":"P5.5.b Verify phase: read-back + canonical-JSON hash comparison","description":"Phase 2 of 2PC (plan §13.5). For each node (parallel): actual = GET /indexes/{uid}/settings; actual_hash = sha256(canonical_json(actual)). All hashes must equal sha256(canonical_json(proposed)). On diverge: reissue settings with exponential backoff (repair). After max_repair_retries (default 3): freeze writes on that index and raise MiroirSettingsDivergence alert.","design":"","acceptance_criteria":"","notes":"","status":"closed","priority":0,"issue_type":"task","created_at":"2026-04-18T21:50:54.159455415Z","created_by":"coding","updated_at":"2026-05-23T12:00:39.622352469Z","closed_at":"2026-05-23T12:00:39.622352469Z","close_reason":"P5.5.b: Verify phase for 2PC settings broadcast - fully implemented and tested. Parallel read-back of settings from all nodes, SHA256 hash comparison with canonical JSON, exponential backoff retry with repair, freeze writes on unrepairable divergence, and alert raising. All tests pass.","source_repo":".","compaction_level":0,"original_size":0,"labels":["advanced-13","phase-5"],"dependencies":[{"issue_id":"miroir-uhj.5.2","depends_on_id":"miroir-uhj.5.1","type":"blocks","created_at":"2026-04-18T21:52:42.832682678Z","created_by":"coding","metadata":"{}","thread_id":""}]}
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{"id":"miroir-uhj.5.3","title":"P5.5.c Commit phase: increment settings_version + stamp header","description":"Phase 3 of 2PC (plan §13.5). If all verify hashes match: increment cluster-wide settings_version in task store; stamp X-Miroir-Settings-Version header on future responses. This is the moment subsequent reads see the new settings AND the moment new writes are allowed to proceed freely. Advances node_settings_version table row for every (index, node) pair that verified in Phase 2 — consumed by §13.5 X-Miroir-Min-Settings-Version client freshness checks.","design":"","acceptance_criteria":"","notes":"","status":"closed","priority":0,"issue_type":"task","created_at":"2026-04-18T21:50:54.191201274Z","created_by":"coding","updated_at":"2026-05-23T12:04:44.109414416Z","closed_at":"2026-05-23T12:04:44.109414416Z","close_reason":"Completed","source_repo":".","compaction_level":0,"original_size":0,"labels":["advanced-13","phase-5"],"dependencies":[{"issue_id":"miroir-uhj.5.3","depends_on_id":"miroir-uhj.5.2","type":"blocks","created_at":"2026-04-18T21:52:42.847536177Z","created_by":"coding","metadata":"{}","thread_id":""}]}
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{"id":"miroir-uhj.5.4","title":"P5.5.d Drift reconciler: periodic hash comparison + auto-repair","description":"Plan §13.5 'Drift reconciler (always on).' Background task every settings_drift_check.interval_s (default 5 min). Hash each (index, node) settings; compare against cluster committed version. Catches out-of-band changes (direct operator PATCH to a single node). Auto-repair: reapply cluster settings to divergent node. Scaling mode: Mode A (plan §14.6) — each pod polls a subset of (index, node) pairs by rendezvous. Metric: miroir_settings_drift_repair_total counter ticks each auto-repair.","design":"","acceptance_criteria":"","notes":"","status":"open","priority":1,"issue_type":"task","created_at":"2026-04-18T21:50:54.222789382Z","created_by":"coding","updated_at":"2026-04-18T21:50:54.222789382Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["advanced-13","phase-5"]}
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{"id":"miroir-uhj.5.5","title":"P5.5.e Client-pinned freshness: X-Miroir-Min-Settings-Version header","description":"Plan §13.5 'Client-pinned freshness'. Clients echo last-observed X-Miroir-Settings-Version as X-Miroir-Min-Settings-Version on subsequent reads. Miroir consults node_settings_version(index, node_id) in task store: excludes nodes where version < floor. If no covering set assembles after exclusion: HTTP 503 miroir_settings_version_stale (client retries). Gives explicit opt-in freshness floor without session state (X-Miroir-Session is orthogonal — covers doc-data freshness).","design":"","acceptance_criteria":"","notes":"","status":"open","priority":1,"issue_type":"task","created_at":"2026-04-18T21:50:54.272659154Z","created_by":"coding","updated_at":"2026-04-18T21:52:42.870100260Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["advanced-13","phase-5"],"dependencies":[{"issue_id":"miroir-uhj.5.5","depends_on_id":"miroir-uhj.5.3","type":"blocks","created_at":"2026-04-18T21:52:42.870065730Z","created_by":"coding","metadata":"{}","thread_id":""}]}
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{"id":"miroir-uhj.6","title":"P5.6 §13.6 Read-your-writes via session pinning","description":"## What\n\nAdd `X-Miroir-Session: <uuid>` support for read-your-writes semantics (plan §13.6):\n\n**On write with session header**: record `{mtask_id, last_write_at, pinned_group}` in `sessions` table. `pinned_group` is the first group to reach per-group quorum; ties broken by ascending group_id.\n\n**On read with session header and pending write**: route exclusively to `pinned_group`. Two wait strategies:\n- `block` — block at orchestrator until the mapped node task reaches `succeeded` (poll `GET /tasks/{uid}` 25 ms start, exponential backoff, cap `max_wait_ms`). Only strategy strictly guaranteeing the prior write is visible.\n- `route_pin` — route to `pinned_group` without waiting. Caller accepts \"my own writes eventually, never cross-group stale.\"\n\n**On read without pending write**: session pin released; normal routing.\n\n**No session header**: exactly today's behavior.\n\n## Why\n\nPlan §13.6: \"SDKs work around this by polling task status — clumsy and error-prone.\" Session pinning solves it in one header with opt-in semantics.\n\n## Details\n\n**Session TTL** default 15 min; LRU bound `session_pinning.max_sessions` (default 100000 → ~50 MB plan §14.2).\n\n**Pinned-group failure**: if the pinned group later fails, pin is cleared; subsequent reads use normal routing (recent write still observable from any group that ACKd).\n\n**Scaling mode**: shared-state per-pod cache — sessions in Redis (HA); per-pod LRU caches for hot sessions.\n\n**Config** (plan §13.6):\n```yaml\nsession_pinning:\n enabled: true\n ttl_seconds: 900\n max_sessions: 100000\n wait_strategy: block\n max_wait_ms: 5000\n```\n\n**Metrics**: `miroir_session_active_count`, `miroir_session_pin_enforced_total`, `miroir_session_wait_duration_seconds`, `miroir_session_wait_timeout_total`.\n\n**Interaction with §13.11 multi-search**: per-sub-query evaluation (plan §13.11 \"Interaction\" paragraph).\n**Interaction with §13.15 tenant affinity**: session pin wins on conflict (strong consistency beats tenant isolation); logs `miroir_tenant_session_pin_override_total{tenant}`.\n\n## Acceptance\n\n- [ ] Write + session + immediate read with `block` → read sees the write (100/100 trials)\n- [ ] Write + session + immediate read with `route_pin` → read routed to pinned group; may return stale results (documented behavior)\n- [ ] Pinned group fails mid-session → pin cleared; read succeeds via another group (may not see recent write — expected per plan §13.6 \"Failure handling\")\n- [ ] Session TTL expiry: LRU evicts oldest when cap hit","design":"","acceptance_criteria":"","notes":"","status":"closed","priority":0,"issue_type":"task","assignee":"claude-code-glm-4.7-delta","created_at":"2026-04-18T21:33:36.867183010Z","created_by":"coding","updated_at":"2026-05-23T05:00:52.933143279Z","closed_at":"2026-05-23T05:00:52.933143279Z","close_reason":"P5.6 §13.6 Session pinning implementation complete.\n\nAll acceptance criteria verified:\n- ✅ Write + session + immediate read with block → read sees the write (100/100 trials)\n- ✅ Write + session + immediate read with route_pin → read routed to pinned group\n- ✅ Pinned group fails mid-session → pin cleared; read succeeds via another group\n- ✅ Session TTL expiry: LRU evicts oldest when cap hit\n\n## Retrospective\n- **What worked:** The session pinning implementation was already complete from previous work. The SessionManager, middleware integration, and request handlers were all properly wired. All 20 integration tests pass.\n- **What didn't:** N/A - implementation was already done.\n- **Surprise:** The session pinning code was more comprehensive than expected, including both block and route_pin strategies, proper TTL handling, LRU eviction, and metrics integration.\n- **Reusable pattern:** The session manager pattern (in-memory LRU cache with async RwLock) works well for other per-request state tracking needs.","source_repo":".","compaction_level":0,"original_size":0,"labels":["advanced-13","phase-5"],"dependencies":[{"issue_id":"miroir-uhj.6","depends_on_id":"miroir-uhj.5","type":"blocks","created_at":"2026-04-18T21:38:33.166505657Z","created_by":"coding","metadata":"{}","thread_id":""}]}
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{"id":"miroir-uhj.7","title":"P5.7 §13.7 Atomic index aliases (single + multi-target)","description":"## What\n\nIntroduce an alias layer in the orchestrator (plan §13.7). Two alias kinds, stored in the `aliases` table (Phase 3):\n- **Single-target**: `current_uid` → one concrete index; writes + reads resolve to that UID; atomic flip via `PUT /_miroir/aliases/{name}`\n- **Multi-target**: `target_uids` → list of UIDs; reads fan out via §13.11 multi-search + merge by `_rankingScore`; writes rejected with `miroir_multi_alias_not_writable`. Managed exclusively by §13.17 ILM.\n\nAdmin API (plan §4 admin table):\n- `POST /_miroir/aliases` (body creates single OR multi depending on `target` vs. `targets` field)\n- `GET /_miroir/aliases` (list)\n- `GET /_miroir/aliases/{name}` (current + flip history)\n- `PUT /_miroir/aliases/{name}` (atomic flip; kind must match existing alias)\n- `DELETE /_miroir/aliases/{name}` (alias only; underlying index untouched)\n\n## Why\n\nPlan §13.7: \"Reindexing today requires either downtime (delete + recreate) or application-layer dual-writes. Schema migrations, synonym overhauls, and dataset refreshes are high-risk.\" Aliases make those operational.\n\n§13.1 reshard step 5 is an alias flip; §13.17 ILM read_alias is a multi-target alias.\n\n## Details\n\n**Resolution**: happens at the proxy's routing step before any fan-out; an already-routed request completes against the UID(s) captured at route time, so flips never tear in-flight requests.\n\n**History**: `aliases.history` is a JSON array bounded by `aliases.history_retention` (default 10). Last-N flips retained for debugging + rollback.\n\n**Scaling mode**: shared state (task store); all pods read same table with short TTL cache.\n\n**Config**:\n```yaml\naliases:\n enabled: true\n history_retention: 10\n require_target_exists: true\n```\n\n**Metrics**: `miroir_alias_resolutions_total{alias}`, `miroir_alias_flips_total{alias}`.\n\n**Write-attempt on multi-target alias**: 409 `miroir_multi_alias_not_writable` with message pointing at owning ILM policy.\n\n## Acceptance\n\n- [ ] Create single-target alias → both writes + reads resolve\n- [ ] Flip: new writes land on new target; in-flight (pre-flip) request completes against the old target without error\n- [ ] Create multi-target alias → read fans out; write returns 409\n- [ ] Operator edit of an ILM-managed multi-target alias → 409 (only ILM can modify)\n- [ ] History: 11th flip evicts the oldest","design":"","acceptance_criteria":"","notes":"","status":"closed","priority":0,"issue_type":"task","assignee":"claude-code-glm-4.7-echo","created_at":"2026-04-18T21:35:21.739087923Z","created_by":"coding","updated_at":"2026-05-23T06:14:13.927122929Z","closed_at":"2026-05-23T06:14:13.927122929Z","close_reason":"P5.7 §13.7: Atomic index aliases - VERIFIED COMPLETE\n\nAll acceptance criteria verified as already implemented in prior commits:\n- Single-target alias resolution for reads and writes\n- Atomic alias flipping with no in-flight request tearing\n- Multi-target aliases for read-only ILM use\n- Write rejection (409) for multi-target aliases\n- History retention with eviction (default: 10)\n\n17/17 acceptance tests pass. 28/28 lib tests pass.\n\nRetrospective:\n- What worked: AliasRegistry pattern (in-memory + task-store persistence) provides fast resolution with consistency\n- What didn't: N/A (verification task)\n- Surprise: Multi-target aliases are explicitly read-only, with 409 error pointing to owning ILM policy\n- Reusable pattern: In-memory registry with task-store persistence, sync on startup, dual-level interfaces (registry + admin API)\n\nImplementation completed in commits:\n- c670d09: Fix alias admin API routes and reorganize alias module\n- 821dea3: Complete alias acceptance tests\n- 823fdd0: Add atomic index alias integration tests\n- f564f3d: Add alias flip metrics emission","source_repo":".","compaction_level":0,"original_size":0,"labels":["advanced-13","phase-5"]}
|
||||
{"id":"miroir-uhj.8","title":"P5.8 §13.8 Anti-entropy shard reconciler (OP#1 closure)","description":"## What\n\nBackground reconciler runs per-shard on a schedule (plan §13.8), in three steps:\n\n**Step 1 — Fingerprint**: iterate docs with `filter=_miroir_shard={id}` paginated; hash(`primary_key || canonical_content_hash`); fold into streaming xxh3 digest keyed by PK. All replicas should produce the same root.\n\n**Step 2 — Diff on mismatch**: recompute per-bucket (pk-hash % 256) digests, locate divergent buckets, enumerate divergent PKs.\n\n**Step 3 — Repair**:\n```\nfor each divergent pk:\n read doc from each replica\n if any replica has _miroir_expires_at <= now:\n // TTL-suspend: never resurrect — DELETE from every replica\n tag with _miroir_origin: antientropy (suppressed in CDC)\n else:\n pick authoritative: highest _miroir_updated_at, newest node task_uid tiebreak\n PUT to all replicas that disagree\n tag with _miroir_origin: antientropy\n```\n\n## Why\n\nPlan §15 Open Problem 1 closure: \"Any document the migration cutover misses is caught on the next pass.\" Plus a standalone value: replicas drift silently (dropped write, partitioned delete, bug) — anti-entropy catches them.\n\n## Details\n\n**`_miroir_updated_at` reserved field**: integer ms since epoch, stamped by orchestrator on every write when `anti_entropy.enabled: true`. Plan §5 reserved fields table confirms: reserved only when AE is on; otherwise pass-through.\n\n**TTL interaction** (§13.14): TTL sweeps must fan out to all replicas in one quorum write; AE treats any replica's `_miroir_expires_at <= now` as \"delete from all\" — the \"highest updated_at wins\" rule is **suspended** for expired docs (plan §13.14 interaction paragraph).\n\n**Scaling mode** (plan §14.6): Mode A — each pod fingerprints and repairs its rendezvous-owned shards.\n\n**Self-throttling**: sleeps between shards; targets < 2% per-node CPU by default.\n\n**Config**:\n```yaml\nanti_entropy:\n enabled: true\n schedule: \"every 6h\"\n shards_per_pass: 0\n max_read_concurrency: 2\n fingerprint_batch_size: 1000\n auto_repair: true\n updated_at_field: _miroir_updated_at\n```\n\n**Metrics**: `miroir_antientropy_shards_scanned_total`, `miroir_antientropy_mismatches_found_total`, `miroir_antientropy_docs_repaired_total`, `miroir_antientropy_last_scan_completed_seconds`.\n\n**Alert**: `MiroirAntientropyMismatch` fires when mismatches persist for 3 consecutive passes (~18h at default schedule).\n\n## Acceptance\n\n- [ ] Induce divergence on 1 shard; reconciler detects within `schedule` interval and repairs\n- [ ] Expired-doc test: a stale write with older `updated_at` does NOT resurrect a doc whose `_miroir_expires_at <= now`\n- [ ] CDC subscribers do NOT see anti-entropy writes (filtered by `_miroir_origin`)\n- [ ] Mode A: 3 pods, each owns ~1/3 of shards; anti-entropy runs exactly once per shard per interval cluster-wide","design":"","acceptance_criteria":"","notes":"","status":"open","priority":0,"issue_type":"task","created_at":"2026-04-18T21:35:21.765464465Z","created_by":"coding","updated_at":"2026-04-18T21:38:33.181224998Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["advanced-13","phase-5"],"dependencies":[{"issue_id":"miroir-uhj.8","depends_on_id":"miroir-uhj.14","type":"blocks","created_at":"2026-04-18T21:38:33.181204787Z","created_by":"coding","metadata":"{}","thread_id":""}]}
|
||||
{"id":"miroir-uhj.8.1","title":"P5.8.a Fingerprint step: per-replica xxh3 digest over (pk || content_hash)","description":"Anti-entropy step 1 (plan §13.8). For each replica of the shard: iterate docs via filter=_miroir_shard={id} paginated; for each doc: hash(primary_key || canonical_content_hash); fold into a Merkle root OR streaming xxh3 digest keyed by pk. All replicas SHOULD produce the same root in steady state. Costs dominated by read bandwidth (self-throttled to <2% CPU target). Throttle knobs: schedule (default 'every 6h'), shards_per_pass (0=all), max_read_concurrency (2), fingerprint_batch_size (1000).","design":"","acceptance_criteria":"","notes":"","status":"open","priority":0,"issue_type":"task","assignee":"","created_at":"2026-04-18T21:51:10.718105882Z","created_by":"coding","updated_at":"2026-05-23T11:48:11.050349055Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["advanced-13","phase-5"]}
|
||||
{"id":"miroir-uhj.8.1","title":"P5.8.a Fingerprint step: per-replica xxh3 digest over (pk || content_hash)","description":"Anti-entropy step 1 (plan §13.8). For each replica of the shard: iterate docs via filter=_miroir_shard={id} paginated; for each doc: hash(primary_key || canonical_content_hash); fold into a Merkle root OR streaming xxh3 digest keyed by pk. All replicas SHOULD produce the same root in steady state. Costs dominated by read bandwidth (self-throttled to <2% CPU target). Throttle knobs: schedule (default 'every 6h'), shards_per_pass (0=all), max_read_concurrency (2), fingerprint_batch_size (1000).","design":"","acceptance_criteria":"","notes":"","status":"open","priority":0,"issue_type":"task","created_at":"2026-04-18T21:51:10.718105882Z","created_by":"coding","updated_at":"2026-05-23T12:08:21.613682540Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["advanced-13","phase-5"]}
|
||||
{"id":"miroir-uhj.8.2","title":"P5.8.b Diff step: bucket-granular re-digest to find divergent PKs","description":"Anti-entropy step 2 (plan §13.8). Triggered on fingerprint root mismatch. Recompute per-bucket digests (pk-hash % 256). Bucketed comparison isolates divergence to ~0.4% of the PK space per bucket. Then enumerate divergent PKs within the bucket. Reused by §13.1 reshard verify with PK-keyed (not shard-keyed) bucketing so cross-S comparison works.","design":"","acceptance_criteria":"","notes":"","status":"open","priority":0,"issue_type":"task","created_at":"2026-04-18T21:51:10.752927624Z","created_by":"coding","updated_at":"2026-04-18T21:52:42.911112407Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["advanced-13","phase-5"],"dependencies":[{"issue_id":"miroir-uhj.8.2","depends_on_id":"miroir-uhj.8.1","type":"blocks","created_at":"2026-04-18T21:52:42.911034687Z","created_by":"coding","metadata":"{}","thread_id":""}]}
|
||||
{"id":"miroir-uhj.8.3","title":"P5.8.c Repair step: highest-updated_at-wins WITH TTL suspend branch","description":"Anti-entropy step 3 (plan §13.8 + §13.14 interaction). For each divergent pk: read doc from each replica. IF any replica's copy has _miroir_expires_at <= now: TTL suspend — DELETE the doc from every replica that still holds it, tagged _miroir_origin: antientropy. ELSE: pick authoritative version by highest _miroir_updated_at, newest node task_uid as tiebreak; PUT to all disagreeing replicas, tagged antientropy. The TTL branch is CRITICAL to prevent zombie resurrection — a stale write with older updated_at must NOT rewrite a doc whose expires_at has passed. Plan §13.14 spells this out: 'The highest updated_at wins rule is suspended for expired documents.'","design":"","acceptance_criteria":"","notes":"","status":"open","priority":0,"issue_type":"task","created_at":"2026-04-18T21:51:10.776469673Z","created_by":"coding","updated_at":"2026-04-18T21:52:42.955082495Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["advanced-13","phase-5"],"dependencies":[{"issue_id":"miroir-uhj.8.3","depends_on_id":"miroir-uhj.8.2","type":"blocks","created_at":"2026-04-18T21:52:42.955019941Z","created_by":"coding","metadata":"{}","thread_id":""}]}
|
||||
{"id":"miroir-uhj.9","title":"P5.9 §13.9 Streaming routed dump import (OP#5)","description":"## What\n\nIntercept `.dump` import requests and stream the NDJSON through a per-document router (plan §13.9):\n- `serde_json::StreamDeserializer` on the request body parses incrementally\n- For each document: extract primary key → `shard_id = hash(pk) % S` → inject `_miroir_shard` → append to per-target-node buffer\n- Flush each per-node buffer at `batch_size` (default 1000) via normal `POST /indexes/{uid}/documents`\n- Track the fan of node-task-uids in the task registry\n- Return one `miroir_task_id` to client\n\nSettings + primaryKey + keys (from the dump) applied via §13.5 two-phase broadcast BEFORE document streaming begins.\n\n## Why\n\nPlan §15 Open Problem 5 closure. Plan §13.9: \"Importing a Meilisearch dump via Miroir today broadcasts every document to every node, transiently placing 100% of the corpus on each node. Unusable for corpora larger than a single node's disk.\"\n\n## Details\n\n**Scaling mode** (plan §14.6): Mode C — large dumps are split on NDJSON line boundaries into chunks of `chunk_size_bytes` (default 256 MiB); chunks re-enqueued as independent jobs; any pod claims a chunk.\n\n**Fallback to broadcast**: `dump_import.mode: broadcast` (legacy) for dump variants that can't be fully reconstructed via public API; discouraged because it transiently places 100% corpus on each node.\n\n**Config** (plan §13.9, authoritative):\n```yaml\ndump_import:\n mode: streaming # streaming | broadcast (legacy)\n batch_size: 1000\n parallel_target_writes: 8\n memory_buffer_bytes: 134217728 # 128 MiB\n chunk_size_bytes: 268435456 # 256 MiB (§14.5 Mode C chunk size)\n```\n\n**Admin API + CLI** (plan §4 + §13.9):\n- `POST /_miroir/dumps/import` (multipart body) → `{\"miroir_task_id\": \"...\"}`\n- `GET /_miroir/dumps/import/{id}/status`\n- `miroir-ctl dump import --file products.dump --index products`\n\n**Metrics**: `miroir_dump_import_bytes_read_total`, `miroir_dump_import_documents_routed_total`, `miroir_dump_import_rate_docs_per_sec`, `miroir_dump_import_phase`.\n\n## Acceptance\n\n- [ ] 500MB dump imported end-to-end; no node's transient disk usage exceeds its share `(total / Ng)`\n- [ ] Mid-import pod failure: another pod picks up the next chunk; no docs lost, no docs duplicated (PK idempotency)\n- [ ] Streaming mode vs broadcast mode: both produce the same post-import index content (verified by a search query)\n- [ ] Import rate metric tracks actual throughput visible in Grafana","design":"","acceptance_criteria":"","notes":"","status":"open","priority":0,"issue_type":"task","created_at":"2026-04-18T21:35:21.785475036Z","created_by":"coding","updated_at":"2026-04-18T21:38:33.194570551Z","source_repo":".","compaction_level":0,"original_size":0,"labels":["advanced-13","phase-5"],"dependencies":[{"issue_id":"miroir-uhj.9","depends_on_id":"miroir-uhj.5","type":"blocks","created_at":"2026-04-18T21:38:33.194537480Z","created_by":"coding","metadata":"{}","thread_id":""}]}
|
||||
|
|
|
|||
|
|
@ -5,11 +5,11 @@
|
|||
"model": "glm-4.7",
|
||||
"exit_code": 1,
|
||||
"outcome": "failure",
|
||||
"duration_ms": 287700,
|
||||
"duration_ms": 237997,
|
||||
"input_tokens": null,
|
||||
"output_tokens": null,
|
||||
"cost_usd": null,
|
||||
"captured_at": "2026-05-23T11:50:04.011537527Z",
|
||||
"captured_at": "2026-05-23T12:08:21.588169613Z",
|
||||
"trace_format": "claude_json",
|
||||
"pruned": false,
|
||||
"template_version": null
|
||||
|
|
|
|||
File diff suppressed because one or more lines are too long
16
.beads/traces/miroir-uhj.5.3/metadata.json
Normal file
16
.beads/traces/miroir-uhj.5.3/metadata.json
Normal file
|
|
@ -0,0 +1,16 @@
|
|||
{
|
||||
"bead_id": "miroir-uhj.5.3",
|
||||
"agent": "claude-code-glm-4.7",
|
||||
"provider": "zai",
|
||||
"model": "glm-4.7",
|
||||
"exit_code": 0,
|
||||
"outcome": "success",
|
||||
"duration_ms": 239285,
|
||||
"input_tokens": null,
|
||||
"output_tokens": null,
|
||||
"cost_usd": null,
|
||||
"captured_at": "2026-05-23T12:04:49.774450336Z",
|
||||
"trace_format": "claude_json",
|
||||
"pruned": false,
|
||||
"template_version": null
|
||||
}
|
||||
2
.beads/traces/miroir-uhj.5.3/stderr.txt
Normal file
2
.beads/traces/miroir-uhj.5.3/stderr.txt
Normal file
|
|
@ -0,0 +1,2 @@
|
|||
SessionEnd hook [/home/coding/.ccdash/hooks/session-end.sh] failed: /bin/sh: line 1: /home/coding/.ccdash/hooks/session-end.sh: cannot execute: required file not found
|
||||
|
||||
2372
.beads/traces/miroir-uhj.5.3/stdout.txt
Normal file
2372
.beads/traces/miroir-uhj.5.3/stdout.txt
Normal file
File diff suppressed because one or more lines are too long
|
|
@ -5,11 +5,11 @@
|
|||
"model": "glm-4.7",
|
||||
"exit_code": 1,
|
||||
"outcome": "failure",
|
||||
"duration_ms": 234602,
|
||||
"duration_ms": 248806,
|
||||
"input_tokens": null,
|
||||
"output_tokens": null,
|
||||
"cost_usd": null,
|
||||
"captured_at": "2026-05-23T11:48:11.035164574Z",
|
||||
"captured_at": "2026-05-23T12:10:41.038049006Z",
|
||||
"trace_format": "claude_json",
|
||||
"pruned": false,
|
||||
"template_version": null
|
||||
|
|
|
|||
File diff suppressed because one or more lines are too long
|
|
@ -1 +1 @@
|
|||
04dd6cf640b2088fe0cd680f345f09834d1d3b62
|
||||
64170cd658f641ab5af59a62a760b2ecb95495cb
|
||||
|
|
|
|||
75
Cargo.lock
generated
75
Cargo.lock
generated
|
|
@ -938,6 +938,12 @@ dependencies = [
|
|||
"serde_json",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "downcast"
|
||||
version = "0.11.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "1435fa1053d8b2fbbe9be7e97eca7f33d37b28409959813daefc1446a14247f1"
|
||||
|
||||
[[package]]
|
||||
name = "either"
|
||||
version = "1.15.0"
|
||||
|
|
@ -1075,6 +1081,15 @@ dependencies = [
|
|||
"percent-encoding",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "fragile"
|
||||
version = "2.1.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8878864ba14bb86e818a412bfd6f18f9eabd4ec0f008a28e8f7eb61db532fcf9"
|
||||
dependencies = [
|
||||
"futures-core",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "fuchsia-zircon"
|
||||
version = "0.3.3"
|
||||
|
|
@ -2078,6 +2093,7 @@ dependencies = [
|
|||
"futures-util",
|
||||
"hex",
|
||||
"indexmap 2.14.0",
|
||||
"mockall",
|
||||
"proptest",
|
||||
"rand 0.8.6",
|
||||
"redis",
|
||||
|
|
@ -2136,6 +2152,7 @@ dependencies = [
|
|||
"http-body-util",
|
||||
"mime_guess",
|
||||
"miroir-core",
|
||||
"mockall",
|
||||
"mockito",
|
||||
"opentelemetry",
|
||||
"opentelemetry-otlp",
|
||||
|
|
@ -2159,6 +2176,32 @@ dependencies = [
|
|||
"uuid",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "mockall"
|
||||
version = "0.13.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "39a6bfcc6c8c7eed5ee98b9c3e33adc726054389233e201c95dab2d41a3839d2"
|
||||
dependencies = [
|
||||
"cfg-if 1.0.4",
|
||||
"downcast",
|
||||
"fragile",
|
||||
"mockall_derive",
|
||||
"predicates",
|
||||
"predicates-tree",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "mockall_derive"
|
||||
version = "0.13.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "25ca3004c2efe9011bd4e461bd8256445052b9615405b4f7ea43fc8ca5c20898"
|
||||
dependencies = [
|
||||
"cfg-if 1.0.4",
|
||||
"proc-macro2 1.0.106",
|
||||
"quote 1.0.45",
|
||||
"syn 2.0.117",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "mockito"
|
||||
version = "1.7.2"
|
||||
|
|
@ -2609,6 +2652,32 @@ dependencies = [
|
|||
"zerocopy",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "predicates"
|
||||
version = "3.1.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ada8f2932f28a27ee7b70dd6c1c39ea0675c55a36879ab92f3a715eaa1e63cfe"
|
||||
dependencies = [
|
||||
"anstyle",
|
||||
"predicates-core",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "predicates-core"
|
||||
version = "1.0.10"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "cad38746f3166b4031b1a0d39ad9f954dd291e7854fcc0eed52ee41a0b50d144"
|
||||
|
||||
[[package]]
|
||||
name = "predicates-tree"
|
||||
version = "1.0.13"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d0de1b847b39c8131db0467e9df1ff60e6d0562ab8e9a16e568ad0fdb372e2f2"
|
||||
dependencies = [
|
||||
"predicates-core",
|
||||
"termtree",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "pretty_assertions"
|
||||
version = "1.4.1"
|
||||
|
|
@ -3714,6 +3783,12 @@ dependencies = [
|
|||
"windows-sys 0.61.2",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "termtree"
|
||||
version = "0.5.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8f50febec83f5ee1df3015341d8bd429f2d1cc62bcba7ea2076759d315084683"
|
||||
|
||||
[[package]]
|
||||
name = "testcontainers"
|
||||
version = "0.23.3"
|
||||
|
|
|
|||
|
|
@ -71,3 +71,4 @@ criterion = "0.5"
|
|||
tokio = { version = "1", features = ["rt", "macros", "time"] }
|
||||
testcontainers = "0.23"
|
||||
testcontainers-modules = { version = "0.11", features = ["redis"] }
|
||||
mockall = "0.13"
|
||||
|
|
|
|||
|
|
@ -152,7 +152,7 @@ impl<C: NodeClient> AntiEntropyReconciler<C> {
|
|||
///
|
||||
/// The canonical form excludes internal Miroir fields (_miroir_*, _rankingScore)
|
||||
/// and serializes with sorted keys for deterministic hashing.
|
||||
fn compute_content_hash(document: &Value) -> u64 {
|
||||
pub fn compute_content_hash(document: &Value) -> u64 {
|
||||
// Remove internal fields to get canonical content
|
||||
let mut canonical = document.clone();
|
||||
if let Some(obj) = canonical.as_object_mut() {
|
||||
|
|
@ -182,7 +182,7 @@ impl<C: NodeClient> AntiEntropyReconciler<C> {
|
|||
/// Iterates all documents with filter=_miroir_shard={id}, computes
|
||||
/// hash(primary_key || content_hash) for each, and folds into a
|
||||
/// streaming xxh3 digest.
|
||||
async fn fingerprint_shard(
|
||||
pub async fn fingerprint_shard(
|
||||
&self,
|
||||
node_id: &NodeId,
|
||||
shard_id: u32,
|
||||
|
|
|
|||
|
|
@ -52,6 +52,7 @@ tracing-opentelemetry = { version = "0.28", optional = true }
|
|||
tower = "0.5"
|
||||
http-body-util = "0.1"
|
||||
mockito = "1"
|
||||
mockall = "0.13"
|
||||
tokio = { version = "1", features = ["rt", "macros", "rt-multi-thread"] }
|
||||
testcontainers = "0.23"
|
||||
testcontainers-modules = { version = "0.11", features = ["redis"] }
|
||||
|
|
|
|||
635
crates/miroir-proxy/tests/p5_8_a_anti_entropy_fingerprint.rs
Normal file
635
crates/miroir-proxy/tests/p5_8_a_anti_entropy_fingerprint.rs
Normal file
|
|
@ -0,0 +1,635 @@
|
|||
//! P5.8.a: Anti-entropy fingerprint step integration tests.
|
||||
//!
|
||||
//! Tests the fingerprint step (plan §13.8 step 1):
|
||||
//! - Per-replica xxh3 digest over (pk || content_hash)
|
||||
//! - Paginated iteration via filter=_miroir_shard={id}
|
||||
//! - Streaming xxh3 digest folding
|
||||
//! - Self-throttling behavior
|
||||
|
||||
use miroir_core::anti_entropy::{
|
||||
AntiEntropyConfig, AntiEntropyReconciler, ShardFingerprint,
|
||||
};
|
||||
use miroir_core::scatter::{FetchDocumentsRequest, FetchDocumentsResponse, NodeClient, NodeError};
|
||||
use miroir_core::topology::{Node, NodeId, Topology};
|
||||
use serde_json::json;
|
||||
use std::collections::HashMap;
|
||||
use std::sync::Arc;
|
||||
use tokio::sync::RwLock;
|
||||
|
||||
// Create a mock using mockall::mock! macro
|
||||
mockall::mock! {
|
||||
pub TestNodeClient {}
|
||||
impl NodeClient for TestNodeClient {
|
||||
async fn search_node(
|
||||
&self,
|
||||
node: &NodeId,
|
||||
address: &str,
|
||||
request: &miroir_core::scatter::SearchRequest,
|
||||
) -> std::result::Result<serde_json::Value, NodeError>;
|
||||
|
||||
async fn preflight_node(
|
||||
&self,
|
||||
node: &NodeId,
|
||||
address: &str,
|
||||
request: &miroir_core::scatter::PreflightRequest,
|
||||
) -> std::result::Result<miroir_core::scatter::PreflightResponse, NodeError>;
|
||||
|
||||
async fn write_documents(
|
||||
&self,
|
||||
node: &NodeId,
|
||||
address: &str,
|
||||
request: &miroir_core::scatter::WriteRequest,
|
||||
) -> std::result::Result<miroir_core::scatter::WriteResponse, NodeError>;
|
||||
|
||||
async fn delete_documents(
|
||||
&self,
|
||||
node: &NodeId,
|
||||
address: &str,
|
||||
request: &miroir_core::scatter::DeleteByIdsRequest,
|
||||
) -> std::result::Result<miroir_core::scatter::DeleteResponse, NodeError>;
|
||||
|
||||
async fn delete_documents_by_filter(
|
||||
&self,
|
||||
node: &NodeId,
|
||||
address: &str,
|
||||
request: &miroir_core::scatter::DeleteByFilterRequest,
|
||||
) -> std::result::Result<miroir_core::scatter::DeleteResponse, NodeError>;
|
||||
|
||||
async fn fetch_documents(
|
||||
&self,
|
||||
node: &NodeId,
|
||||
address: &str,
|
||||
request: &FetchDocumentsRequest,
|
||||
) -> std::result::Result<FetchDocumentsResponse, NodeError>;
|
||||
}
|
||||
}
|
||||
|
||||
#[tokio::test]
|
||||
async fn test_fingerprint_shard_empty() {
|
||||
// Test fingerprinting an empty shard
|
||||
let mut mock_client = MockTestNodeClient::new();
|
||||
mock_client
|
||||
.expect_fetch_documents()
|
||||
.returning(|_, _, _| {
|
||||
// Return empty result
|
||||
Ok(FetchDocumentsResponse {
|
||||
results: vec![],
|
||||
limit: 1000,
|
||||
offset: 0,
|
||||
total: 0,
|
||||
})
|
||||
});
|
||||
|
||||
let topology = Arc::new(RwLock::new(Topology::new(1, 1, 1)));
|
||||
let reconciler = AntiEntropyReconciler::new(
|
||||
AntiEntropyConfig::default(),
|
||||
topology,
|
||||
Arc::new(mock_client),
|
||||
);
|
||||
|
||||
let node_id = NodeId::new("node-1".to_string());
|
||||
let result = reconciler
|
||||
.fingerprint_shard(&node_id, 0, "test_index", "http://localhost")
|
||||
.await;
|
||||
|
||||
assert!(result.is_ok());
|
||||
let fp = result.unwrap();
|
||||
assert_eq!(fp.shard_id, 0);
|
||||
assert_eq!(fp.document_count, 0);
|
||||
assert!(fp.merkle_root.starts_with("xxh3:"));
|
||||
}
|
||||
|
||||
#[tokio::test]
|
||||
async fn test_fingerprint_shard_single_document() {
|
||||
// Test fingerprinting a shard with a single document
|
||||
let doc = json!({
|
||||
"id": "doc-1",
|
||||
"title": "Test Document",
|
||||
"content": "Some content",
|
||||
"_miroir_shard": 0,
|
||||
});
|
||||
|
||||
let mut mock_client = MockTestNodeClient::new();
|
||||
mock_client.expect_fetch_documents().returning(move |_, _, req| {
|
||||
if req.offset == 0 {
|
||||
Ok(FetchDocumentsResponse {
|
||||
results: vec![doc.clone()],
|
||||
limit: req.limit,
|
||||
offset: req.offset,
|
||||
total: 1,
|
||||
})
|
||||
} else {
|
||||
Ok(FetchDocumentsResponse {
|
||||
results: vec![],
|
||||
limit: req.limit,
|
||||
offset: req.offset,
|
||||
total: 1,
|
||||
})
|
||||
}
|
||||
});
|
||||
|
||||
let topology = Arc::new(RwLock::new(Topology::new(1, 1, 1)));
|
||||
let reconciler = AntiEntropyReconciler::new(
|
||||
AntiEntropyConfig::default(),
|
||||
topology,
|
||||
Arc::new(mock_client),
|
||||
);
|
||||
|
||||
let node_id = NodeId::new("node-1".to_string());
|
||||
let result = reconciler
|
||||
.fingerprint_shard(&node_id, 0, "test_index", "http://localhost")
|
||||
.await;
|
||||
|
||||
assert!(result.is_ok());
|
||||
let fp = result.unwrap();
|
||||
assert_eq!(fp.shard_id, 0);
|
||||
assert_eq!(fp.document_count, 1);
|
||||
assert!(fp.merkle_root.starts_with("xxh3:"));
|
||||
}
|
||||
|
||||
#[tokio::test]
|
||||
async fn test_fingerprint_shard_pagination() {
|
||||
// Test that pagination works correctly for multiple batches
|
||||
let batch_size = 10u32;
|
||||
let total_docs = 25u32;
|
||||
|
||||
let mut mock_client = MockTestNodeClient::new();
|
||||
mock_client.expect_fetch_documents().returning(move |_, _, req| {
|
||||
let start = req.offset;
|
||||
let end = std::cmp::min(req.offset + req.limit, total_docs);
|
||||
let count = end - start;
|
||||
|
||||
let docs: Vec<serde_json::Value> = (start..end)
|
||||
.map(|i| {
|
||||
json!({
|
||||
"id": format!("doc-{}", i),
|
||||
"title": format!("Document {}", i),
|
||||
"_miroir_shard": 0,
|
||||
})
|
||||
})
|
||||
.collect();
|
||||
|
||||
Ok(FetchDocumentsResponse {
|
||||
results: docs,
|
||||
limit: req.limit,
|
||||
offset: req.offset,
|
||||
total: total_docs as u64,
|
||||
})
|
||||
});
|
||||
|
||||
let mut config = AntiEntropyConfig::default();
|
||||
config.fingerprint_batch_size = batch_size;
|
||||
|
||||
let topology = Arc::new(RwLock::new(Topology::new(1, 1, 1)));
|
||||
let reconciler = AntiEntropyReconciler::new(config, topology, Arc::new(mock_client));
|
||||
|
||||
let node_id = NodeId::new("node-1".to_string());
|
||||
let result = reconciler
|
||||
.fingerprint_shard(&node_id, 0, "test_index", "http://localhost")
|
||||
.await;
|
||||
|
||||
assert!(result.is_ok());
|
||||
let fp = result.unwrap();
|
||||
assert_eq!(fp.shard_id, 0);
|
||||
assert_eq!(fp.document_count, total_docs as u64);
|
||||
}
|
||||
|
||||
#[tokio::test]
|
||||
async fn test_fingerprint_shard_content_hash_excludes_internal_fields() {
|
||||
// Test that internal fields are excluded from content hash
|
||||
let doc1 = json!({
|
||||
"id": "doc-1",
|
||||
"title": "Same Title",
|
||||
"content": "Same Content",
|
||||
"_miroir_shard": 0,
|
||||
"_miroir_updated_at": 1234567890,
|
||||
"_rankingScore": 0.95,
|
||||
});
|
||||
|
||||
let doc2 = json!({
|
||||
"id": "doc-1",
|
||||
"title": "Same Title",
|
||||
"content": "Same Content",
|
||||
});
|
||||
|
||||
// Both documents should produce the same fingerprint despite internal fields
|
||||
let mut mock_client = MockTestNodeClient::new();
|
||||
mock_client.expect_fetch_documents().returning({
|
||||
let mut call_count = 0;
|
||||
move |_, _, req| {
|
||||
let docs = if call_count == 0 {
|
||||
call_count += 1;
|
||||
vec![doc1.clone()]
|
||||
} else {
|
||||
vec![]
|
||||
};
|
||||
|
||||
Ok(FetchDocumentsResponse {
|
||||
results: docs,
|
||||
limit: req.limit,
|
||||
offset: req.offset,
|
||||
total: 1,
|
||||
})
|
||||
}
|
||||
});
|
||||
|
||||
let topology = Arc::new(RwLock::new(Topology::new(1, 1, 1)));
|
||||
let reconciler = AntiEntropyReconciler::new(
|
||||
AntiEntropyConfig::default(),
|
||||
topology,
|
||||
Arc::new(mock_client),
|
||||
);
|
||||
|
||||
let node_id = NodeId::new("node-1".to_string());
|
||||
let result = reconciler
|
||||
.fingerprint_shard(&node_id, 0, "test_index", "http://localhost")
|
||||
.await;
|
||||
|
||||
assert!(result.is_ok());
|
||||
let fp = result.unwrap();
|
||||
assert_eq!(fp.document_count, 1);
|
||||
}
|
||||
|
||||
#[tokio::test]
|
||||
async fn test_fingerprint_shard_different_content_different_hash() {
|
||||
// Test that different content produces different hashes
|
||||
let doc1 = json!({
|
||||
"id": "doc-1",
|
||||
"title": "First Title",
|
||||
"_miroir_shard": 0,
|
||||
});
|
||||
|
||||
let doc2 = json!({
|
||||
"id": "doc-1",
|
||||
"title": "Second Title",
|
||||
"_miroir_shard": 0,
|
||||
});
|
||||
|
||||
// Create two reconcilers and compare fingerprints
|
||||
let mut mock_client1 = MockTestNodeClient::new();
|
||||
mock_client1.expect_fetch_documents().returning({
|
||||
let mut call_count = 0;
|
||||
move |_, _, req| {
|
||||
let docs = if call_count == 0 {
|
||||
call_count += 1;
|
||||
vec![doc1.clone()]
|
||||
} else {
|
||||
vec![]
|
||||
};
|
||||
|
||||
Ok(FetchDocumentsResponse {
|
||||
results: docs,
|
||||
limit: req.limit,
|
||||
offset: req.offset,
|
||||
total: 1,
|
||||
})
|
||||
}
|
||||
});
|
||||
|
||||
let mut mock_client2 = MockTestNodeClient::new();
|
||||
mock_client2.expect_fetch_documents().returning({
|
||||
let mut call_count = 0;
|
||||
move |_, _, req| {
|
||||
let docs = if call_count == 0 {
|
||||
call_count += 1;
|
||||
vec![doc2.clone()]
|
||||
} else {
|
||||
vec![]
|
||||
};
|
||||
|
||||
Ok(FetchDocumentsResponse {
|
||||
results: docs,
|
||||
limit: req.limit,
|
||||
offset: req.offset,
|
||||
total: 1,
|
||||
})
|
||||
}
|
||||
});
|
||||
|
||||
let topology = Arc::new(RwLock::new(Topology::new(1, 1, 1)));
|
||||
|
||||
let reconciler1 = AntiEntropyReconciler::new(
|
||||
AntiEntropyConfig::default(),
|
||||
topology.clone(),
|
||||
Arc::new(mock_client1),
|
||||
);
|
||||
|
||||
let reconciler2 = AntiEntropyReconciler::new(
|
||||
AntiEntropyConfig::default(),
|
||||
topology,
|
||||
Arc::new(mock_client2),
|
||||
);
|
||||
|
||||
let node_id = NodeId::new("node-1".to_string());
|
||||
|
||||
let fp1 = reconciler1
|
||||
.fingerprint_shard(&node_id, 0, "test_index", "http://localhost")
|
||||
.await
|
||||
.unwrap();
|
||||
|
||||
let fp2 = reconciler2
|
||||
.fingerprint_shard(&node_id, 0, "test_index", "http://localhost")
|
||||
.await
|
||||
.unwrap();
|
||||
|
||||
// Different content should produce different hashes
|
||||
assert_ne!(fp1.merkle_root, fp2.merkle_root);
|
||||
}
|
||||
|
||||
#[tokio::test]
|
||||
async fn test_fingerprint_shard_same_content_same_hash() {
|
||||
// Test that identical content produces identical hashes
|
||||
let doc = json!({
|
||||
"id": "doc-1",
|
||||
"title": "Same Title",
|
||||
"content": "Same Content",
|
||||
"_miroir_shard": 0,
|
||||
});
|
||||
|
||||
let mut mock_client1 = MockTestNodeClient::new();
|
||||
mock_client1.expect_fetch_documents().returning({
|
||||
let doc = doc.clone();
|
||||
let mut call_count = 0;
|
||||
move |_, _, req| {
|
||||
let docs = if call_count == 0 {
|
||||
call_count += 1;
|
||||
vec![doc.clone()]
|
||||
} else {
|
||||
vec![]
|
||||
};
|
||||
|
||||
Ok(FetchDocumentsResponse {
|
||||
results: docs,
|
||||
limit: req.limit,
|
||||
offset: req.offset,
|
||||
total: 1,
|
||||
})
|
||||
}
|
||||
});
|
||||
|
||||
let mut mock_client2 = MockTestNodeClient::new();
|
||||
mock_client2.expect_fetch_documents().returning({
|
||||
let doc = doc.clone();
|
||||
let mut call_count = 0;
|
||||
move |_, _, req| {
|
||||
let docs = if call_count == 0 {
|
||||
call_count += 1;
|
||||
vec![doc.clone()]
|
||||
} else {
|
||||
vec![]
|
||||
};
|
||||
|
||||
Ok(FetchDocumentsResponse {
|
||||
results: docs,
|
||||
limit: req.limit,
|
||||
offset: req.offset,
|
||||
total: 1,
|
||||
})
|
||||
}
|
||||
});
|
||||
|
||||
let topology = Arc::new(RwLock::new(Topology::new(1, 1, 1)));
|
||||
|
||||
let reconciler1 = AntiEntropyReconciler::new(
|
||||
AntiEntropyConfig::default(),
|
||||
topology.clone(),
|
||||
Arc::new(mock_client1),
|
||||
);
|
||||
|
||||
let reconciler2 = AntiEntropyReconciler::new(
|
||||
AntiEntropyConfig::default(),
|
||||
topology,
|
||||
Arc::new(mock_client2),
|
||||
);
|
||||
|
||||
let node_id = NodeId::new("node-1".to_string());
|
||||
|
||||
let fp1 = reconciler1
|
||||
.fingerprint_shard(&node_id, 0, "test_index", "http://localhost")
|
||||
.await
|
||||
.unwrap();
|
||||
|
||||
let fp2 = reconciler2
|
||||
.fingerprint_shard(&node_id, 0, "test_index", "http://localhost")
|
||||
.await
|
||||
.unwrap();
|
||||
|
||||
// Same content should produce same hash
|
||||
assert_eq!(fp1.merkle_root, fp2.merkle_root);
|
||||
}
|
||||
|
||||
#[tokio::test]
|
||||
async fn test_fingerprint_shard_key_order_independence() {
|
||||
// Test that JSON key order doesn't affect the hash
|
||||
let doc1 = json!({
|
||||
"id": "doc-1",
|
||||
"z_field": "z_value",
|
||||
"a_field": "a_value",
|
||||
"m_field": "m_value",
|
||||
"_miroir_shard": 0,
|
||||
});
|
||||
|
||||
let doc2 = json!({
|
||||
"m_field": "m_value",
|
||||
"a_field": "a_value",
|
||||
"id": "doc-1",
|
||||
"z_field": "z_value",
|
||||
"_miroir_shard": 0,
|
||||
});
|
||||
|
||||
let mut mock_client1 = MockTestNodeClient::new();
|
||||
mock_client1.expect_fetch_documents().returning({
|
||||
let mut call_count = 0;
|
||||
move |_, _, req| {
|
||||
let docs = if call_count == 0 {
|
||||
call_count += 1;
|
||||
vec![doc1.clone()]
|
||||
} else {
|
||||
vec![]
|
||||
};
|
||||
|
||||
Ok(FetchDocumentsResponse {
|
||||
results: docs,
|
||||
limit: req.limit,
|
||||
offset: req.offset,
|
||||
total: 1,
|
||||
})
|
||||
}
|
||||
});
|
||||
|
||||
let mut mock_client2 = MockTestNodeClient::new();
|
||||
mock_client2.expect_fetch_documents().returning({
|
||||
let mut call_count = 0;
|
||||
move |_, _, req| {
|
||||
let docs = if call_count == 0 {
|
||||
call_count += 1;
|
||||
vec![doc2.clone()]
|
||||
} else {
|
||||
vec![]
|
||||
};
|
||||
|
||||
Ok(FetchDocumentsResponse {
|
||||
results: docs,
|
||||
limit: req.limit,
|
||||
offset: req.offset,
|
||||
total: 1,
|
||||
})
|
||||
}
|
||||
});
|
||||
|
||||
let topology = Arc::new(RwLock::new(Topology::new(1, 1, 1)));
|
||||
|
||||
let reconciler1 = AntiEntropyReconciler::new(
|
||||
AntiEntropyConfig::default(),
|
||||
topology.clone(),
|
||||
Arc::new(mock_client1),
|
||||
);
|
||||
|
||||
let reconciler2 = AntiEntropyReconciler::new(
|
||||
AntiEntropyConfig::default(),
|
||||
topology,
|
||||
Arc::new(mock_client2),
|
||||
);
|
||||
|
||||
let node_id = NodeId::new("node-1".to_string());
|
||||
|
||||
let fp1 = reconciler1
|
||||
.fingerprint_shard(&node_id, 0, "test_index", "http://localhost")
|
||||
.await
|
||||
.unwrap();
|
||||
|
||||
let fp2 = reconciler2
|
||||
.fingerprint_shard(&node_id, 0, "test_index", "http://localhost")
|
||||
.await
|
||||
.unwrap();
|
||||
|
||||
// Same content with different key order should produce same hash
|
||||
assert_eq!(fp1.merkle_root, fp2.merkle_root);
|
||||
}
|
||||
|
||||
#[tokio::test]
|
||||
async fn test_fingerprint_shard_different_shard_ids_different_hashes() {
|
||||
// Test that different shard IDs produce different hashes (different seed)
|
||||
let doc = json!({
|
||||
"id": "doc-1",
|
||||
"title": "Same Title",
|
||||
"_miroir_shard": 0, // This is overridden by the filter anyway
|
||||
});
|
||||
|
||||
let mut mock_client = MockTestNodeClient::new();
|
||||
mock_client.expect_fetch_documents().returning({
|
||||
let mut call_count = 0;
|
||||
move |_, _, req| {
|
||||
let docs = if call_count == 0 {
|
||||
call_count += 1;
|
||||
vec![doc.clone()]
|
||||
} else {
|
||||
vec![]
|
||||
};
|
||||
|
||||
Ok(FetchDocumentsResponse {
|
||||
results: docs,
|
||||
limit: req.limit,
|
||||
offset: req.offset,
|
||||
total: 1,
|
||||
})
|
||||
}
|
||||
});
|
||||
|
||||
let topology = Arc::new(RwLock::new(Topology::new(1, 1, 1)));
|
||||
let reconciler = AntiEntropyReconciler::new(
|
||||
AntiEntropyConfig::default(),
|
||||
topology,
|
||||
Arc::new(mock_client),
|
||||
);
|
||||
|
||||
let node_id = NodeId::new("node-1".to_string());
|
||||
|
||||
let fp1 = reconciler
|
||||
.fingerprint_shard(&node_id, 0, "test_index", "http://localhost")
|
||||
.await
|
||||
.unwrap();
|
||||
|
||||
let fp2 = reconciler
|
||||
.fingerprint_shard(&node_id, 1, "test_index", "http://localhost")
|
||||
.await
|
||||
.unwrap();
|
||||
|
||||
// Different shard ID (different seed) should produce different hash
|
||||
assert_ne!(fp1.merkle_root, fp2.merkle_root);
|
||||
}
|
||||
|
||||
#[tokio::test]
|
||||
async fn test_fingerprint_config_batch_size() {
|
||||
// Test that fingerprint_batch_size configuration is respected
|
||||
let batch_size = 5u32;
|
||||
let total_docs = 12u32;
|
||||
|
||||
let mut mock_client = MockTestNodeClient::new();
|
||||
mock_client.expect_fetch_documents().returning(move |_, _, req| {
|
||||
let start = req.offset;
|
||||
let end = std::cmp::min(req.offset + req.limit, total_docs);
|
||||
let count = end - start;
|
||||
|
||||
let docs: Vec<serde_json::Value> = (start..end)
|
||||
.map(|i| {
|
||||
json!({
|
||||
"id": format!("doc-{}", i),
|
||||
"_miroir_shard": 0,
|
||||
})
|
||||
})
|
||||
.collect();
|
||||
|
||||
Ok(FetchDocumentsResponse {
|
||||
results: docs,
|
||||
limit: req.limit,
|
||||
offset: req.offset,
|
||||
total: total_docs as u64,
|
||||
})
|
||||
});
|
||||
|
||||
let mut config = AntiEntropyConfig::default();
|
||||
config.fingerprint_batch_size = batch_size;
|
||||
|
||||
let topology = Arc::new(RwLock::new(Topology::new(1, 1, 1)));
|
||||
let reconciler = AntiEntropyReconciler::new(config, topology, Arc::new(mock_client));
|
||||
|
||||
let node_id = NodeId::new("node-1".to_string());
|
||||
let result = reconciler
|
||||
.fingerprint_shard(&node_id, 0, "test_index", "http://localhost")
|
||||
.await;
|
||||
|
||||
assert!(result.is_ok());
|
||||
// With 12 docs and batch size 5, we expect 3 fetches: 5 + 5 + 2 + 1 (empty check)
|
||||
// Actually the loop continues until empty, so: 5 + 5 + 2 + 0 (empty) = 4 fetches
|
||||
}
|
||||
|
||||
#[tokio::test]
|
||||
async fn test_compute_content_hash_unit() {
|
||||
// Unit tests for compute_content_hash
|
||||
use miroir_core::anti_entropy::AntiEntropyReconciler;
|
||||
|
||||
let doc1 = json!({
|
||||
"id": "test-1",
|
||||
"title": "Test",
|
||||
"_miroir_shard": 5,
|
||||
});
|
||||
|
||||
let doc2 = json!({
|
||||
"id": "test-1",
|
||||
"title": "Test",
|
||||
});
|
||||
|
||||
// Create a dummy reconciler just to call the static method
|
||||
let topology = Arc::new(RwLock::new(Topology::new(1, 1, 1)));
|
||||
let reconciler = AntiEntropyReconciler::<MockTestNodeClient>::new(
|
||||
AntiEntropyConfig::default(),
|
||||
topology,
|
||||
Arc::new(MockTestNodeClient::new()),
|
||||
);
|
||||
|
||||
let hash1 = AntiEntropyReconciler::<MockTestNodeClient>::compute_content_hash(&doc1);
|
||||
let hash2 = AntiEntropyReconciler::<MockTestNodeClient>::compute_content_hash(&doc2);
|
||||
|
||||
assert_eq!(hash1, hash2, "internal fields should not affect content hash");
|
||||
}
|
||||
Loading…
Add table
Reference in a new issue