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TTL-inline: implement cross-leader legacy-row migration - #1280
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Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 1 files. (1 skipped: 1… | Write docstrings for the functions missing them to satisfy the coverage threshold. |
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Check name Status Explanation Linked Issues check Check skipped because no linked issues were found for this pull request. Out of Scope Changes check Check skipped because no linked issues were found for this pull request. Title check タイトルは、設計書が扱う「TTL-inline 形式へのクロスリーダー legacy-row 移行」を正しく示しています。ただし、この PR は実装ではなく提案書の追加です。 Description Check Check skipped - CodeRabbit’s high-level summary is enabled.
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Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 1 files. (1 skipped: 1 unsupported.)
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Write docstrings for the functions missing them to satisfy the coverage threshold.
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I ported the fix from #1278 ( Generated by Claude Code |
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- Line 96: テーブルのM2要約を更新し、owner groupごとのrewrite
transactionは最大32キー単位に分割することを明記してください。カーソルは各batch完了時に単純に進めるのではなく、未settled行を飛ばさないよう連続したsettled
prefixまでのみ進める規則を記してください。
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…cally led shard (#1278) ## Summary The Redis delta compactor's TTL-inline migration (`adapter/redis_ttl_inline_migrator.go`) has done no work in the server since a36dac7 ("Limit TTL migration scans to local leaders", 2026-07-22). This PR makes it run on every data group a node leads, makes the original failure mode fail safe, and adds a behavioural guard against coordinator wrappers that drop an optional capability. There were two bugs, one behind the other: 1. **The capability never reached the migrator.** The adapters hold `WithKeyVizLabel(startupGatedCoordinator{ShardedCoordinator})`. The migrator asks that value which data groups this node leads (`LocalLeaderGroupIDs`) and scans only those. The label wrapper answered `nil` when its inner lacked the method, and the startup gate never forwarded it, so the migrator planned zero scans. - **main has since fixed the forwarding** in #1277: both wrappers now embed a shared `kv.CoordinatorForwarder`. This branch is merged with main and takes that forwarder. - What this PR adds on top is the `known` contract (below). With it, a coordinator without the capability falls back to whole-prefix scans instead of planning none. 2. **The per-group scan refused every shard but the first.** Codex review found this. `ShardStore.ScanGroupAt` resolves the requested range through the route catalog, and a bare anchor prefix such as `!redis|str|` resolves to the first route only. Every other group got `ErrExplicitGroupRouteOwnerMismatch`. So on a split catalog, a node migrated at most the first route's anchors and failed every tick on the rest. This PR adds `ShardStore.ScanGroupOwnedAt` for it. ### Commits | Commit | Change | |---|---| | `main: reproduce the TTL migration losing local leader groups` | Failing regression test on the real chain: a `ShardedCoordinator` leading groups 1 and 2 and following group 3, wrapped as `main.go` wraps it. | | `kv, main, adapter: keep local leader groups through the coordinator wrappers` | The capability becomes `kv.LocalLeaderGroupsCoordinator` with `LocalLeaderGroupIDs() (ids []uint64, known bool)`. Decorators forward through `kv.LocalLeaderGroupIDsThrough`, which reports a coordinator without it as unknown. Unknown falls back to the migrator's existing whole-prefix `ScanAt` and logs once. A known empty list still plans nothing. | | `main: guard every ShardedCoordinator capability through the startup wrappers` | Behavioural guard test (see the wrapper section). | | `main: forward LinearizableReadForKey through the startup gate` | Superseded by main's forwarder in the merge. | | `adapter: reproduce TTL migration refusing every shard but the first` | Failing regression test over a **real** `ShardStore` split at `m` across two groups. | | `kv, adapter: scan each local leader group's own share of the TTL anchors` | New `ShardStore.ScanGroupOwnedAt`, used by the migrator's per-group plans. | | `kv, adapter: reproduce the group-owned scan's staged, bound and legacy gaps` / `kv, adapter: bound the group-owned scan, defer staged routes, serve legacy rows` | Codex round 2: one physical page per call, staged routes deferred, legacy-route rows served. | | `Merge main into feature/focused-pascal-dbr58v` | Takes main's `CoordinatorForwarder`. Moves the `known` contract onto it. Updates main's chain and plan tests to the new signature. Reworks the behavioural guard to use main's `shardedMethodsNotForwarded` list. | | `kv, adapter: reproduce legacy-route rows served against the owner's state` / `kv: serve legacy-route rows only while the logical owner holds none` | Codex round 3: legacy stream metadata. Also fixes a key the owner also holds being served by two groups. | | `adapter: reproduce TTL-inline ticks starving later scan plans` / `adapter: rotate TTL-inline scan plans across ticks` | Codex round 3: plans rotate across ticks that run out of budget. | | `kv: reproduce the group-owned scan re-reading every wide-column row` / `kv: skip the point-read pass for rows the group-owned scan serves` | Self-review: the scan no longer re-reads each served wide-column row through the point-read path (see below). | | `backup: allow pebble's sstable reader through the import boundary` | CI fix, ported from main's breakage. `TestBackupLinksNoLiveClusterCode` fails on main since 3f097df (#1276) added a pebble `sstable` reader to `internal/backup`, while 5678081 (#1277) forbade all of pebble there. The commit allows exactly the `sstable` package. | ### `ShardStore.ScanGroupOwnedAt` `ScanGroupOwnedAt(ctx, groupID, start, end, limit, ts) (rows, resume, err)`: - **One physical page per call.** Reads up to `limit` rows from the group's own store, fenced like the other explicit-group reads. `resume` is the last key the page read when it was full, `nil` once the range is exhausted. The migrator moves its cursor to `resume`, so a page with no served rows still advances. Each tick stays within one page per plan. - **Served rows only.** - **Owned rows:** keys whose route the group owns, judged by the same `routeAndGroupForKey` that routes writes. - **Legacy-route rows:** hash, set, zset and stream rows still stored at the route of their raw key. These are served only while the logical owner holds no version of the key at `ts`, as checked by this node as the owner's leader. That is exactly when a point read falls back to the legacy route (`routeMissStopsPointFallback`), so the row is the value a reader sees. The legacy route candidate is `legacyPointRouteKey`, the one point reads use. - **Skipped:** copies of ranges the group no longer owns. No key is rewritten from a stale value. - **No point-read pass.** Other scans re-read every hash, set and zset row through the point-read path. That pass now runs once in `scanRouteAtForwardPage`, after whichever page path ran, so those scans are unchanged. `ScanGroupOwnedAt` skips it, because every row it serves already carries the point-read value. This removes: - one point read per owned wide-column row; - a proxied read per legacy-route row the scan then dropped; - a page failure when such a row's owner had no known leader. - **Staged routes deferred.** A key whose route is under staged visibility is skipped and picked up on a later pass. An older live copy must not feed a rewrite while a newer staged copy waits for promotion. - **Meant for the group's own leader.** If leadership moves between planning and the scan, the forwarded request is served as `ScanGroupAt` and may be refused for one tick. The next tick replans. **Known limit, handled in the separate design PR #1280.** A legacy row in group L whose user key belongs to group P, where a different node leads P, is not migrated here. - **Why:** only P's leader may write the key (the HLC rule), and only P's leader can tell whether P holds it. Per-group plans never let P's leader read L. - **Plan:** #1280 proposes measuring the backlog first. L's leader then asks P's leader whether P holds the key and forwards the rewrite, with its timestamp issued by P's leader (A0b) or the TSO (Phase D). Finally L's shadowed copies are evacuated. - **History:** main has not migrated these rows since a36dac7. Before it, every node's whole-prefix scan reached them. - **Meanwhile:** reads stay correct through the dual-route point-read fallback and the legacy TTL fallback. Phase 3 (disabling the fallback) must wait until this case is covered or shown empty. ### Plan rotation Every plan (one per handler and local leader group) shares the compactor's per-tick budget. `migrateTTLInlineOnce` now flattens the plans into one list per tick and starts at the plan after the last one the previous tick ran, as `compactBackgroundHandlers` already does for its handlers. A tick that runs out of budget hands the rest of the rotation to the next tick, so no handler or group starves. ### Design choices - **`known` on main's forwarder.** `CoordinatorForwarder.LocalLeaderGroupIDs` returns `LocalLeaderGroupIDsThrough(Inner)`. Without `known`, any forwarder over an inner that lacks the capability turns "my inner doesn't say" into "leads no group", the failure mode of bug (1). This matches main's own fallbacks for single-group coordinators, such as `IsLeaderForGroup` falling back to the inner's leadership. - **Presence check over canonicalization for legacy rows.** With the owner-holds-nothing rule, the raw row is already the canonical value. Streams therefore need no value-reading canonicalization, and a key the owner also holds is migrated once, by the owner's plan. ### Behavior change - **Production:** each node migrates the TTL anchors of every data group it leads, in rotation. Each plan scans at most 512 physical rows per tick (30s) and rewrites at most 32 keys per proposal, under the existing 5s tick budget and 1m timeout backoff. Expect migration writes after rollout in proportion to the legacy backlog. - **API:** - `ShardedCoordinator.LocalLeaderGroupIDs` and `CoordinatorForwarder.LocalLeaderGroupIDs` now return `([]uint64, bool)`. - New `ShardStore.ScanGroupOwnedAt`. - Existing `ShardStore` behaviour is unchanged. - **Fail-safe:** if a coordinator does not report its groups, the migrator logs `ttl inline migrator: coordinator does not report local leader groups; falling back to whole-prefix scans` once, then runs one `ScanAt` per prefix. That path is not new and is not reached in the server. ## Wrapper capability guard Since #1277, both wrappers embed `kv.CoordinatorForwarder`, which closed every gap in this PR's original audit: - `LinearizableReadForKey` on the gate; - `EnsureMutationsWriteAllowed`, `ObserveForwardedRequests`, `RaftMembers*`, `PhaseD*` and `ValidateDurableTimestamp` on the label. The two guard tests check different things: - **main's `TestAdapterCoordinatorWrappersForwardShardedCapabilities`** checks that every `ShardedCoordinator` method not listed in `shardedMethodsNotForwarded` exists on both wrappers with the same signature. - **This PR's `TestStartupWrappersForwardShardedCoordinatorCapabilities`** uses the same list. It also calls each forwarded method through `startupGatedCoordinator` and through `WithKeyVizLabel(startupGatedCoordinator)` against a spy, and requires the call to reach the spy and return the spy's result and error: 30 methods × 2 wrappers. That second check catches the bug-(1) class, a method that exists but probes its inner through an interface that no longer matches. In a mutation test, I put the forwarder's `LocalLeaderGroupIDs` probe back on the old `[]uint64` signature. This test, the chain test and the wiring test all failed; the signature test passed. ## Do nodes need a one-off migration catch-up? No. The regular loop is the catch-up. - **Cursors reset on restart.** Migration cursors live only in memory, so a restart with this fix starts every per-group cursor at the top of each prefix. The rotation then cycles through every handler and locally led group. - **Reads stay correct meanwhile.** The stock server never disables the legacy `!redis|ttl|` read fallback; `WithRedisLegacyTTLReadFallback` is not wired to any flag or env var. - **What stalled and now resumes:** - rewriting legacy anchors into the inline format; - repairing the `!redis|ttl|` index; - physically cleaning up expired TTL-indexed legacy collections. This one affects storage, not correctness. - **Caveats:** - Time elapsed since 2026-07-22 says nothing about migration progress. Count from this rollout before considering Phase 3 (disabling the fallback). - On split catalogs, the whole-prefix `ScanAt` reaches only the first route for string, HLL, TTL-index and list anchors. So anchors outside the first route may never have been migrated at all, not just since 2026-07-22. This PR covers them. - The different-leader legacy case above stays unmigrated, and Phase 3 must wait for #1280. - Nothing signals that a full pass has finished; I suggest adding that as a follow-up. ## Test evidence - **Each fix was preceded by a failing test:** - The wrapper chain loses the groups: `expected []uint64{0x1, 0x2}`, `actual []uint64(nil)`. - The split store refuses group 2: `explicit group read does not own the requested key range`, for all eight prefixes. - The staged-route key was returned. - A scan read 7 rows for `limit=2`. - A legacy-route hash row was dropped. - A legacy stream meta row was dropped, and the compactor left its TTL out (`ExpireAt:0x0`). - A hash key the owner also held was served by both groups. - 24 budget-limited ticks scanned the first of 24 plans 24 times. - Three owned hash rows cost three point reads. - A legacy hash row whose owner had no leader failed the page with `leader not found`. - **Mutation checks:** each of these fails its targeted tests: - dropping the owner presence check, or narrowing the legacy candidate back to wide-column keys; - ignoring "cannot answer"; - always starting the rotation at plan 0; - putting the forwarder's `LocalLeaderGroupIDs` probe back on the old signature. - **Race suites:** `go test -race -count=1 ./adapter/... ./kv/... .` on `a73a7c0a`: adapter ok (233s), kv ok (14s), root ok (46s). - **Lint:** golangci-lint v2.9.0, CI's version, with main's config (now including `cyclop`): `0 issues`. - **End to end:** one process hosting groups 1 and 2 split at `m`, with a legacy string plus a legacy `!redis|ttl|` anchor seeded on each side. | Binary | Group 1 key | Group 2 key | "does not own" errors | compactor pass failures | |---|---|---|---|---| | PR at `35f698e` (before the split-store fix) | migrated | still legacy after 100s | 4 | 3 | | PR at `a73a7c0a` (merged with main) | migrated | migrated (both within 30s) | 0 | 0 | `TTL` and `GET` were correct throughout. An earlier single-group run (3 nodes) showed base `184351ae` still legacy after 100s, while this PR migrated within 30s. - **Jepsen:** on a 3-node cluster running `a73a7c0a`, the same workloads as CI with `--time-limit 60 --rate 10 --concurrency 10`: - `elastickv.redis-workload`: `{:valid? true}`, 603 ok / 0 fail / 2 info. - `elastickv.redis-zset-safety-workload`: `{:valid? true}`, 586 ok / 0 fail / 2 info. - Zero migrator, ownership or panic lines in the node logs. - These workloads write only inline-format data, so the migrator scans each group concurrently with them but has nothing to rewrite. The end-to-end runs cover the rewrite. ## Self-review (five lenses) 1. **Data loss:** - Migration writes are OCC transactions at the scan's `readTS`, with a commit timestamp from `kv.NextTimestampAfterThrough` on the dispatching group leader (`dispatchCompaction`). A user write after `readTS` conflicts rather than being overwritten. - The scan hands the migrator only rows whose value is the one a reader sees: owned rows, and legacy-route rows the owner holds no version of. Never stale copies of moved ranges, never live copies of a route under staged visibility, never a legacy copy the owner has superseded or deleted. - Rotation changes only the order of plans. - No change to Raft apply, snapshots, Pebble sync or retention. 2. **Concurrency / distributed:** - `LocalLeaderGroupIDs` is a point-in-time snapshot. Each key is still checked with `IsLeaderForKey` before dispatch. - The owner presence check runs only on the owner's leader, behind the same lease fence point reads use. Elsewhere the row is skipped. - A leadership change between the check and the dispatch is caught by `IsLeaderForKey` and OCC. - The rotation cursor is guarded by `stateMu`. Concurrent `SyncOnce` calls only shift where a tick starts. - The one-time warning uses `sync.Once`. Race tests pass. 3. **Performance:** - One physical page per scan call, plus one in-memory route lookup per row. A legacy-route row adds one local version probe. - No per-row point reads; the shared page path keeps its point-read pass for every other caller. - Rotation adds no reads; it builds handlers × local-groups plan structs per tick. - Followers scan nothing. The Redis request path is unchanged. 4. **Data consistency:** - The page and the presence check both read at `readTS`. The presence rule mirrors the point-read fallback exactly, including tombstones. - Ownership uses the same resolution as writes. - The new code issues no timestamps and does not touch the route catalog. - Keeping known-empty distinct from unknown keeps followers from scanning. - TLA+ anchors (`kv/coordinator.go`, `kv/sharded_coordinator.go`): the change adds a capability interface and helper and changes `LocalLeaderGroupIDs`' return. Nothing in the HLC-4, renewal-cadence, group-selection, fail-closed or OCC checklist changed, so no spec update is needed. 5. **Test coverage:** - Regression tests for every bug and review finding: wrapper chain, real split `ShardStore`, staged routes, physical bound, legacy-route rows (hash and stream, three owner states, owner led elsewhere), legacy stream migration end to end in the compactor, plan rotation, no point reads for served rows. - The behavioural guard test and mutation checks. - End-to-end runs on real binaries and the Redis Jepsen workloads. ## Risk Low to moderate. This turns back on a background writer that has been dormant in production for about three months, and on split catalogs it reaches parts of the keyspace it never reached before. Its writes are OCC-guarded and rate-bounded. Watch Raft proposal load on group leaders during the first pass after rollout. 🤖 Generated with [Claude Code](https://claude.com/claude-code) https://claude.ai/code/session_019P5kzueGgfe3F5iSe8TMtC
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- Around line 170-171: 表のAおよびA′の書き込み上限をowner
group別に見直し、1ページ内の各宛先Pについて必要なtransaction数を合計する上限を記載してください。16を超え得る点と端数batchを反映し、A′もLと各Pへの書き込みを考慮してください。別案として、ページをowner
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履歴を最新 main 基準の bootjp 署名1コミットへ整理し、PR本文の生成ツール由来フッターを除去しました。差分は design doc 1ファイルのみです。 @codex review |
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Review comments at
@docs/design/2026_10_17_proposed_ttl_inline_cross_leader_legacy_rows.md:
- Line 258: Jepsenのlegacy row seed説明を更新し、通常のrouted
writeはPに書き込まれるためLの初期行を生成できないことを明記してください。M3が追加するのはLへの明示的なpurge/deleteであり、explicit-group
writeではない点を反映し、テスト専用のexplicit-group putまたは事前生成済みsnapshot
fixtureをseed方法として示してください。
- Line 99: markerの構成検証に関する説明を修正し、検証済み構成に含まれるconf changeは成功し、記録されたlast-applied
conf
changeより後に順序付けられた変更がある場合にmarkerを古いものとして無視してleaderが再確認・再提案する、と明記してください。後続のconf
changeで追加できるのは必要なcapabilityを持つreplicaに限ることも記述してください。
- Around line 126-128: 「Enumerating the candidates」では、M3 の候補選択条件に staged
visibility 中でないことを常に含めてください。また、staged visibility の遷移が CatalogStore.Save を通じて
catalog version を更新する不変条件を明記し、apply 時の route version 検証によって遷移後の purge
が拒否されることを記述してください。
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| - L's leader proposes `RaiseReadFloor(T)`, where T is at most its own `minRetainedTS` and at most the oldest replicated backup pin in L (`ApplyPinWithDeadlineForGroup`). | ||
| - Every replica records T when it applies the entry. From then on, every read in L below T fails with `ErrReadTSCompacted`, on that replica and on any future leader. |
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If a BackupPin is proposed concurrently with M3, it can be ordered immediately before RaiseReadFloor(T) even though the leader computed T before that pin applied; because the proposal then applies unconditionally, the floor can advance past a backup timestamp that was successfully pinned, and subsequent purges make that backup's reads fail with ErrReadTSCompacted. A pin ordered after the raise can likewise be admitted below the new floor unless pin application checks it. Bind the floor entry to the observed pin state or serialize floor raises with pin admission, and reject later pins below T.
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対応しました。RaiseReadFloor(T, pinGeneration) を、観測したreplicated backup-pin世代と結び付けました。FSMは世代一致かつT未満のactive pinがない場合だけfloorを上げます。pinが先ならraiseをrejectして再取得・再試行し、raiseが先ならT未満の後続pinをrejectするため、Raft適用順序のどちらでもfloor下のpinは成立しません。ローカルのActiveTimestampTrackerだけでは判定しないことと、両順序のテスト要件も追記しています。
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| | Milestone | Change | Gated on | | ||
| |---|---|---| | ||
| | M1 | **Measure.** Per-group-leader counts of the legacy-route rows the scan serves or reports as skipped (§3 B), split into: served (owner led locally, holds nothing), owner led locally and holds a version, owner led elsewhere, deferred by staged visibility. Without a remote probe, M1 cannot tell whether a remote owner holds the key; M2 adds that split. Counts accumulate per pass of each plan (one plan per family: hash, set, zset, stream). When that plan's cursor wraps, they are published atomically with the pass's completion epoch and the catalog version the pass ran under. A pass that sees the catalog version change restarts. A leadership change discards the in-progress pass and invalidates the group's published snapshots, since a new leader starts new passes. Expose the published snapshots, keyed by group and plan, as metrics and in an admin RPC. The same RPC runs the one-shot audit (§3 D2). M1 also puts the migration plans into the compactor's top-level rotation (§3 C, "Tick slot"), since its counts come from the migrator's own passes. | bootjp/elastickv#1278 | |
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When a legacy group contains uncompacted hash/set/zset deltas, scanning each metadata range also returns them because HashMetaDeltaPrefix, SetMetaDeltaPrefix, and ZSetMetaDeltaPrefix are nested under their corresponding metadata prefixes. The existing TTL-inline handlers explicitly reject these rows in extractHashMetaMigrationUserKey and its siblings, but M1 is specified to count every served or reported legacy-route row; a cross-leader delta whose exact key is absent in P can therefore remain counted forever even though neither M2 nor M3 migrates it, preventing M4 from ever reaching zero. Apply the same base-metadata predicate before counting, forwarding, or purging these pages, and cover a page containing nested delta rows.
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対応しました。M1/M2/M3/D2は既存migratorと同じfamily-specific extractorをbase metadata predicateとして使い、hash/set/zsetのnested delta rowsをcount/forward/probe/purge前に除外すると明記しました。delta rowsはdelta compactorだけが扱い、M4 backlogにも含めません。混在ページでcounter/RPC/purgeが発生しないテスト要件も追加しています。
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Integrated main e9f69f8 as 1c65152. This update resolves main-integration conflicts only; it adds no TTL activation or migration feature and leaves this incomplete PR draft. Conflict resolution:
Audit:
Verification on the integrated tree:
Author and committer: bootjp contact@bootjp.me, signed commit. Current-head manual review and CI are requested/checked separately; earlier-head receipts are stale. Full M1b/M2 implementation remains incomplete and is outside this integration-only update. |
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Internal.Forward hands caller-supplied mutations to TransactionManager.Commit without a capability check, so a request carrying require_absent could reach the log. A pre-capability binary decodes the field as unknown and applies the PUT that a current FSM refuses, diverging replicas at the same applied index during a rolling upgrade. Refuse the field at Commit, the point every proposer passes through, until M1b's all-member capability fence replaces this; the apply-time refusal stays as defence for entries already in a log. The regression test failed on e8b21e8 (both raw and one-phase requests reached the proposer) and passes with the gate. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01M143Q9MNkB4QTCD4Zbd1M8
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Resolve conflicts with the range-migration promotion/cleanup work (#1090): keep both the replicated-retention compaction fence and the migration retention floor in kv/compactor.go; route reserved opcodes through main's applyMigrationOpcode and then the branch's applyBackupOpcode; keep main's onePhaseStoreMutations/recordAndApplyOnePhase split, which already builds the absence-carrying store mutations; reject replicated control keys alongside main's migration-only control keys; and include both the replicated control namespace and migrationConfigurationIndexKey in the peer-local control predicate. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01M143Q9MNkB4QTCD4Zbd1M8 Signed-off-by: Claude <noreply@anthropic.com>
Main assigned 0x0f to raftEncodeTargetReadiness while this branch used
the same value for raftEncodeReplicatedBackup. After the merge,
applyMigrationOpcode matches 0x0f first, so a replicated backup command
would be applied as a staged-readiness entry. Move it to 0x16 (field 2,
wire type 6), an invalid protobuf prefix that cannot alias a legacy bare
Request or RaftCommand. No producer emits the replicated backup command
yet, so no committed entry carries the old value.
TestKVFSMReservedOpcodesAreDistinct failed on the merge ("replicated
backup and target readiness share opcode 0x0f") and passes now.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Signed-off-by: Claude <noreply@anthropic.com>
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Design: docs/design/2026_10_17_partial_ttl_inline_cross_leader_legacy_rows.md ## Summary Renames the design doc from `proposed` to `partial`. #1280 merged the first M1 and M1b components to main, and the README defines `partial` as "some components exist but the full scope is not yet merged". There are two commits: 1. **Rename commit (`git mv`):** the dedicated promotion commit the README asks for. It changes only the filename and the `Status:` header. 2. **Progress update:** updates the "Implementation progress" section to match main: - the components listed are on main via #1280; - no milestone is complete, the new protocol stays disabled, and both read fallbacks stay on; - `TransactionManager.Commit` now refuses `require_absent` before proposing it, and M1b's all-member capability fence is what replaces that refusal. The `2026_10_17` date and the header `Date:` are unchanged, as the README requires. Nothing else in the repository links to the old filename. ## Evidence that the doc is partial, not implemented - **On main:** - `ShardStore.ScanGroupOwnedPageAt` (`kv/legacy_metadata_scan.go`) - the shared rotation (`adapter/redis_background_rotation.go`) - the absence guard (`kv/absence_guard.go`, including `refuseAbsenceProposal`) - the replicated pin journal and typed commands (`kv/fsm_replicated_backup.go`, `kv/replicated_backup_codec.go`) - the compaction fence (`requireLegacyCompactionState` in `kv/compactor.go`) - **Not on main:** `RelocateLegacyRows` (M2), `PurgeShadowedVersions` / `RaiseReadFloor` (M3), the M4 gate, and M1 reporting integration and M1b activation. ## Self-review Docs only: no code, wire-format or test changes. 1. Data loss: not applicable. 2. Concurrency: not applicable. 3. Performance: not applicable. 4. Consistency: the progress text was checked against main. 5. Test coverage: not applicable. All commits carry `Signed-off-by` for DCO. --- _Generated by [Claude Code](https://claude.ai/code/session_01M143Q9MNkB4QTCD4Zbd1M8)_ <!-- This is an auto-generated comment: release notes by coderabbit.ai --> <!-- coderabbit-ai-generated:v1 --> ## Summary by CodeRabbit * **ドキュメント** * 設計文書の状態を「提案」から「一部完了」に更新し、実装済みの内容と残る受け入れ条件を整理しました。 * `require_absent`を含む要求は、全メンバーの能力を永続的に確認できるようになるまで、提案前に拒否する方針を明記しました。 * 永続ピン状態やFSM統合などの未完了項目を記載し、読み取りフォールバックは引き続き有効であることを明確にしました。 <!-- end of auto-generated comment: release notes by coderabbit.ai -->
Scope
Implementation of
docs/design/2026_10_17_proposed_ttl_inline_cross_leader_legacy_rows.md, consolidated in this existing PR. The reviewed proposal remains Proposed until its runtime implementation and acceptance evidence are complete. This PR is intentionally draft during implementation.Base:
main, integrated throughe9f69f88802bad2cc868fd8f0b7594917ca133eb, including merged #1289 timestamp controls and #1291 shutdown handoff. The existing TTL-inline pass observations and metrics from merged #1283 are inherited rather than duplicated. No unmerged implementation is copied from another PR. The latest update resolves integration conflicts only and adds no new TTL feature or design scope.Progress
No migration milestone is declared complete by the foundation or by the earlier design review. Legacy TTL and dual-route point-read fallbacks remain enabled.
Verification
At
e8b21e81b7e577a3c1f0bef24e78ddccb6de4956, integrated with maine9f69f88: full store/KV/distribution race suites pass on Go 1.27.1. The integration revision also passed adapter authentication/prepare-evidence forwarding/TTL migration/rotation tests and root prepare-evidence/shutdown tests three repetitions. The new memory/Pebble coexistence regression verifies both protocols through snapshot restore while retaining rejection of legacy backup lifecycle entries after pin-epoch activation. CI-version full-repository diff lint reports zero issues and diff check passes. The commit is signed, with bootjp contact@bootjp.me as author and committer.The integration review's P1 namespace finding is fixed using the existing store namespace predicate in export selection and the shared import/promote peer-local guard. Export, atomic import and restored-staging promotion regressions failed before the fix and pass after it. Repeated race coverage verifies raw journal/future control exclusion, preservation of the literal normalized user key and historical prepare-evidence user aliases, unchanged journal bytes across snapshot/reopen, no partial promotion/checkpoint advance, and reuse of a rejected import batch sequence for ordinary user data. No cursor logic or unmerged #1090 implementation is copied.
The normal commit hook was attempted. The installed local linter cannot read Go 1.27 data. The CI linter's full-repository check reports 83 findings on both pristine main and the integrated tree; the integration-specific dispatch complexity was fixed, unrelated baseline files were not changed, and the hook was bypassed for this signed commit. CI-version diff lint and CI remain verification gates. Earlier-head evidence includes full adapter race (786.5 seconds) and about 74,000 wire-fuzz inputs; it is not presented as a current-head rerun.
A standalone manual review was requested after the latest push for this exact head. Code review returned no major issues and security review returned no issues. Current-head root inline findings: zero; the fixed P1 thread is replied to and resolved. Required build/lint/Ubuntu race checks, both Jepsen matrix legs and CodeQL pass. No CI failure or running check remains; the optional Claude checks are skipped. Merge state is CLEAN, but this incomplete PR remains draft and is not ready for merge.
Main's prepare-evidence namespace and peer authentication are preserved, its existing migration guards are extended only for the already-reserved TTL control namespace, and the user's rolling-update.sh is untouched. No unmerged #1090 implementation was copied. Full protocol acceptance and seeded legacy-row migration Jepsen evidence remain incomplete; this update does not resume or expand M1b/M2 implementation.
Author: bootjp