Ledger engine: crash-safe, resumable drill_events migration — no Redis - #7

Merged

ar2rsawseen merged 79 commits into

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poc/ledger-no-redis

Aug 31, 2026

Commits on Aug 17, 2026

feat: ledger engine — chunk checklist + per-chunk staging, no Redis (A/B vs classic)

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4e58e48
bench: kill-drill supports both engines via DRILL_ENGINE

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c0b71cf
feat: Countly-branded live dashboard for the ledger engine (/viz)

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d2ae949
feat: complete the ledger engine — DLQ, bisection, breaker, backpressure, monitor, dry-run, report

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7f85b6c
refactor: single-architecture service — remove the legacy engine entirely

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7845383
fix: honest completion + operator recovery (found by live failure drill)

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1505849
feat: ingestion-matching transform — adopt shared spec + differential harness (D4, #6)

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0d23752
fix: per-process dedup-canary table name (multi-pod create/drop race)

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691609a
docs: operational runbook (flow, incident responses, in-place variant)

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fa3d1a2
feat: poison-pill quarantine — auto-split chunks that crash the process

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ed9ef40
feat: DLQ waive — the terminal operator decision for unmigratable docs

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d0ac2c8
feat(viz): full operator console — controls, DLQ panel, coercion report

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57eb793
feat(viz): self-service migration console — guided runbook, preflight, verification

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4d6f710
feat: pod scaling UX, real preflight actions, chaos-hardening

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63413e9

Commits on Aug 18, 2026

feat(viz): configuration card — current knobs, defaults, when-to-change, state location

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58baa64
fix: null-cd sweep ordering — close a silent data-miss window (found by review)

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87c5478
docs+setup: fresh-operator path — compose/.env rewritten, README split, null-cd preflight count

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c9d5620
feat(viz): serve the console at / — /viz kept as alias

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b4da411
fix(engine): a startup failure no longer kills the console

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7ebcd8c
feat: ledger rebuild from data + per-collection scoping of all live cd-window queries

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9cf0073
feat(k8s): ready-to-apply Kubernetes manifests

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d461d94
docs: decouple the transform spec from the unmerged platform PR

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0e2c34c
docs: reference countly-platform#1105 (surgical cd passthrough)

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82d4783
feat(verify): attribute duplicate ids to live ingestion vs migration

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900e016
feat: migrated provenance flag — 100% exact migrated/live distinction

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68cfe26
refactor: provenance without schema changes — (_id, cd) pairs replace the migrated column

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622dcf3
ci: run the full integration suite on every PR (MongoDB 7 + ClickHouse 26.4)

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081afc4
fix(viz): honest counters + DLQ fix-location guidance

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2243004
feat: scale-proof UI + self-driving preflight

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2575422
feat: billion-scale engine paths — async verify, partitioned dup scan, full DLQ drain

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06e4782
config: default SERVICE_NAME to drill-migrator — two required vars, not three

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43fa12d
test: migration under concurrent live ingestion

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930f9aa
feat: mass-DLQ safety — global pause guard, background replay, redo-then-replay dedup

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2f6d87d
feat(dlq): mass guard and panel report the disk cost

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c801daa
fix(viz): replay toast says started, not finished

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d7dbef0
feat: optional dashboard auth (DASHBOARD_PASSWORD)

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f2759d0
Revert dashboard auth — not needed

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c78e2df
docs: Docker multi-container scaling recipe

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8fa6c2a

Commits on Aug 20, 2026

feat: post-migration audits — source recount + sampled doc-per-doc comparison

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9652804
feat: per-commit source-count guard + cd-pruned id lookups

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363cc63
fix(audit): waived/pending DLQ docs explain their window's shortfall

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5e71394
test: de-flake live-parallel writer assertion

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a78df1a

Commits on Aug 22, 2026

fix: index builds survive any duration and crash-resume correctly

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83b09ee
feat(transform): stringify integer doubles in the Int64/UInt64 overflow window

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f3b87ad
test: pin platform query compatibility of overflow-window strings

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50e4095

Commits on Aug 23, 2026

fix: dry-run DLQ replay must never write the live table

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5647a5a
feat: global chunk scheduling — pods parallelize across collections

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af1b267
feat: top-up passes — delta chunks for data arriving after mapping

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2115e6c
fix(rebuild): unscopable windows in mixed-shape runs are pending, not misclassified

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abca6a4
test: pin both source schemas — hashed-collection (old) and base drill_events (new format)

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7b1de12
fix: multi-pod correctness — claim fencing, append reservation, sweep barrier-lite

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974fee5
fix: initChunks gets the same reservation as appendChunks + race test sweep

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e482b80
fix: single-winner recovery + attach self-healing — found by new pod-chaos harness

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f4926ef
test(chaos): full field scenario — live source growth + live CH ingestion under random pod kills

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6560b1c
fix(ui): Docs/Second shows the CLUSTER rate, not this pod's — field-reported

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09c0b61
fix(guards): lease-aware active-pod checks for rebuild and both audits

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09b68e2
fix: raise max_partitions_per_insert_block for migration inserts (field failure)

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492408a
fix: type the partition-block setting as string; bound it at the provable ceiling

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test: attach a 120-partition chunk end-to-end (retry path of field chunk #110)

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af1421f
feat: outage self-healing — classified breaker pause + auto-resume probe

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58a3e5d
fix: recovery must never kill the pod + outage suite proves the breaker loop live

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c2ee314

Commits on Aug 24, 2026

fix: retention-TTL shrinkage is not a defect + dashboard truth at 73k-chunk scale

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ce865af
feat: mirror-first playbook — live change-stream mirror + checkpoint-bounded migration

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6871100
refactor: tee-mirror cutover — drop the change-stream mirror, keep the bound

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feat: tee-boundary auto-detection + tee-sync parity monitor

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docs(ui): the cd bound is opt-in — spell out both modes

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feat: one-click apply of the detected bound — multi-pod, no restarts

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a5b5e78
docs(ui): scenario picker — all four cutover topologies, spelled out

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75381ff
perf: prune pair checks to the primary key — fixes the tiny-chunk tail collapse

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b0e705a

Commits on Aug 25, 2026

fix: structured skips are a data condition — not fuel for the fail-rate breaker

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792f544
feat(ui): field feedback round — realtime rate, pause visibility, run timeline

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feat(ui): chunk map is a row-aligned window over the claim-order tape

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eedcf70
feat(ui): progress bar — documents are the work, chunks are the bookkeeping

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889c787
feat(ui): one Pause/Resume toggle button

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472663d

Commits on Aug 26, 2026

fix(ui): progress gets a FROZEN denominator — "to go" is a countdown now

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b137b8b
feat(audit): cd-checksum fingerprint — catches the right COUNT of the WRONG docs

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feat: SSH-first monitoring — /status.txt, progress heartbeat, curl cookbook

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fa65d28

Commits on Aug 31, 2026