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fix(query-db): keep a reacquired Query's rows across an older release - #2206
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A released Query keeps an empty ownership entry until its release publishes, so unpublished metadata cannot restore it as an owner. The already-applied guard and the on-demand direct-write skip read that entry as an applied result. A stale Query reacquired while its release was held therefore skipped its cached result, owned nothing, and lost its row when the release published; a failed refetch never restored it. Mark a release's entry and let only an applied entry satisfy those two readers. Add oracle coverage for stale reacquisition (refetch outcome, placement, peer), published owners after a lease claims a released row (including a reacquired lease without cached data), the reacquired cache patch behind a refresh barrier, an accepted direct insert through a refetch start of an empty result, and a failed release commit. Co-authored-by: Isaac <no-reply@databricks.com>
Co-authored-by: Isaac <no-reply@databricks.com>
🦋 Changeset detectedLatest commit: 7119798 The changes in this PR will be included in the next version bump. This PR includes changesets to release 1 package
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| Check name | Status | Explanation | Resolution |
|---|---|---|---|
| Docstring Coverage |  |
Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 2 files. (2 skipped: 2 … | Write docstrings for the functions missing them to satisfy the coverage threshold. |
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Check name Status Explanation Title check The title is concise, specific, and accurately describes the primary fix: preserving rows for a reacquired Query across an older release. Description check The description includes all required sections, explains the fix and motivation, documents extensive oracle coverage and limitations, reports test results, and includes the changeset status. The check… 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. Full details: Description check
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Explanation
The description includes all required sections, explains the fix and motivation, documents extensive oracle coverage and limitations, reports test results, and includes the changeset status. The checklist remains unchecked because the repository-root pnpm test was not run, but the description clearly records the package-level test command that was run.
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Full details: Docstring Coverage
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Explanation
Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 2 files. (2 skipped: 2 unsupported.)
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Write docstrings for the functions missing them to satisfy the coverage threshold.
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Size Change: 0 B Total Size: 218 kB ℹ️ View Unchanged
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… name check:mangle rejects `.lease`, which the spread `...lease` matched. Co-authored-by: Isaac <no-reply@databricks.com>
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- 🪄 Fix comments: Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @packages/query-db-collection/src/query.ts:
- Around line 1129-1131: Preserve the original released tombstone identity when
snapshotting ownership in the rollback path around released, releasedOwnership,
and queryToRows. Reuse the existing entry when it is marked in
releasedOwnership; only clone ordinary ownership sets, so failApplication and
retireOwnership continue handling the original tombstone correctly. Add oracle
history coverage for reacquisition during a held release, commit failure before
publication, and failed refetch, ensuring the row remains until the reacquired
lease is released.
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📒 Files selected for processing: 5
.changeset/stale-reacquired-query-ownership.mddocs/contributing/oracle-coverage.mddocs/contributing/oracle-reviews/2026-10-20-stale-reacquired-ownership.mdpackages/query-db-collection/src/query.tspackages/query-db-collection/tests/ownership-lifecycle.oracle.test.ts
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…llback The result-application rollback snapshot cloned the Query's ownership entry, so restoring it after a failed application would drop the mark on a released Query's entry. Snapshot the entry by reference; application replaces the entry instead of mutating it. No reached history restores a marked entry, so no witness distinguishes this change. Add a witness for a reacquired lease whose durable commit fails after a held release, and record the CodeRabbit review ledger. Co-authored-by: Isaac <no-reply@databricks.com>
Co-authored-by: Isaac <no-reply@databricks.com>
Extend the reacquired lease table to results with one or two rows and to zero, one, or two peer leases (42 cells). On the original defect a row only the reacquired lease owns disappears at publication, and a shared row disappears when the last peer leaves. Update the review record and coverage map: the cleanup-skip mutant is killed by the retention cleanup test in tests/query.test.ts, CR-1's remaining route is a duplicate-key replay inside the reacquired application, and the managed Node SQLite path drops a released row from the public Collection when its durable delete fails, unlike the controlled adapter. Co-authored-by: Isaac <no-reply@databricks.com>
1 task done
Later probes showed the divergence is not specific to the managed path: the Node SQLite adapter drops the row from the public Collection on every sync-present configuration tried, including without Query DB, while the controlled adapter keeps it. Co-authored-by: Isaac <no-reply@databricks.com>
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🎯 Changes
#2198 made a released Query keep an empty
queryToRowsentry until its release publishes. That entry stops unpublished row metadata from naming the released Query as an owner again. Two other readers treated the same entry as "the active lease has applied a result":deferDataRefresh).The fix marks a release's entry in a
WeakSet. A newhasAppliedOwnershiphelper reports only an unmarked entry, and both readers use it. All other readers still treat the entry as a resolved owner with no rows, which keeps #2198's protection. After CodeRabbit's review, the result-application rollback snapshot keeps the entry by reference instead of cloning it, so a rollback cannot drop the mark. No reached history restores a marked entry, so that change has no distinguishing witness. The production diff is 15 lines added and 6 removed inpackages/query-db-collection/src/query.ts.🔬 Oracle Coverage
Owner:
packages/query-db-collection/tests/ownership-lifecycle.oracle.test.ts(Query DB ownership row indocs/contributing/oracle-coverage.md). The review record isdocs/contributing/oracle-reviews/2026-10-20-stale-reacquired-ownership.md.Violated law: a reacquired observer lease owns the Query's latest successful data until its own release. An older release that publishes later retires only the older lease.
staleTimedecides only whether a refetch starts.New witnesses:
main31dad2dd3staleTime∞ or 0 × refetch fails / same rows / empty × settles while held or after publication × 0–2 peers × 1–2 rows (42)published: [], model["shared"]. A row a peer shares is lost only when the last peer leaves; a row only the lease owns is lost at publication.bclaims whilea's release is held or after × peer ×areacquired without cached data and its fetch fails (8), checked throughDbClientdehydrate/hydratedeferDataRefresh, then a direct upsert["Shared"], model["Manual"]The tables that are green on
mainexist to reject wrong repairs. Each mutant below was applied to this PR's source and run against the whole oracle file. Every one fails at an assertion:tests/query.test.ts(explicit-cleanup retention test)A hostile storage adapter that ignores a failed commit fails both failed-commit witnesses.
Limits:
state.cleanup(), after sync cleanup has removed the observers, so the restore guard returns. The remaining route is a duplicate-key replay inside the reacquired application's own transaction.errorand storage keeps the row, but the public Collection drops it. The controlled adapter keeps it; the real SQLite adapter drops it in every sync-present configuration tried, including without Query DB. This is a persistence-layer defect outside this PR, tracked in SQLite persistence: a sync transaction whose durable write fails still changes the public Collection #2210.✅ Checklist
pnpm test.pnpm testwas not run at the repository root.pnpm vitest runinpackages/query-db-collection: 42 files, 1460 passed, 2 skipped, no type errors. Oracle file: 585 passed.pnpm run check:manglepasses.🚀 Release Impact
This pull request and its description were written by Isaac.
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