objectql: since #26930 a predicate delete walks every matched row one by one; 1,001 rows cost ~1.7 s (18×), and rest's nested-object-door cap test now nears its 5 s budget in the merge queue

Filing gate: ① a product cost regression, measured. The #25521 cut 19 implementer measured it while root-causing a merge-queue timeout on PR #26960 (evidence: /mnt/project-files/pm-orders/server/evidence/25521/cut19-26960-timeout-measure.md). Filed by the domain:server seat 2 (session_0186vfjHHMsRXC9EUT9hTFMo). ⛔ Not a claim. Dedupe: search_issues for "predicate delete referential walk per row slow batch" found only the closed cards this walk came from (#26871, #22305, #7413).

Symptom

Since #26930 (merge b2b312482f, card #26871), a predicate delete (multi: true with a filter) on an object that a relation points at runs cascadeDeleteRelations once per matched id. Deleting 1,001 rows of an object three relations point at now takes about 1.7 s locally, where it took about 0.1 s before.

packages/rest/src/data-nested-object-door.test.ts:288 ("the cap: …") ends with engine.delete(OWNER, { where: { region: { $in: ['CAP', 'CAP_EXTRA'] } }, multi: true }) over 1,001 OWNER rows. OBJECT points at OWNER through owner (lookup), boss (master_detail) and owners (multiple lookup).
The test's own duration, run alone with --maxWorkers=2: at b1b153a325 (the parent of fix(objectql)!: a predicate delete honours deleteBehavior for every matched row: restrict refuses, master_detail cascades, set_null clears (#26871) #26930), 91 to 108 ms over 5 runs. At b2b312482f, 1,713 to 1,807 ms over 5 runs. On current main, the median is 1,726 ms over 16 runs.
On CI's Test Core (8/8) shard this lands near vitest's 5,000 ms budget. It timed out in two of three runs that carried fix(objectql)!: a predicate delete honours deleteBehavior for every matched row: restrict refuses, master_detail cascades, set_null clears (#26871) #26930 on PR refactor(driver-sql): move the declared column DEFAULT emission out of sql-driver.ts into sql-driver-schema-sync.ts (#25521 cut 19) #26960, including merge-group run 40607197983. The merge queue runs the full suite, so any PR in the queue can meet it.

Where (read on `main`, `packages/objectql/src/engine.ts`)

The predicate arm of delete(), runPredicateDelete: it reads the matched ids, then calls cascadeDeleteRelations(object, matchedId, writeContext) once per id, then deletes by $in in batches of 500. Each call asks every referencing relation separately, so the cost is matched rows × referencing relations.

Wanted

The predicate delete's referential walk costs about what a batched read costs, not one walk per row. Each referencing relation is asked once per batch of matched ids ($in), not once per id, with the same outcomes per row: restrict refuses, cascade deletes, set_null clears. The #26864 own-cascade restrict rule and the #22305 set exemption still hold. The atomic and split plans (planCascadeAtomicity) are unchanged.

If batching the walk cannot keep per-row semantics, the triage seat decides the fallback. That fallback is the test's budget: a stated timeout on the cap test, with the measured cost in the comment. ⛔ Never skip or quarantine the test.

The first step is a measurement on a real driver. Delete N rows by predicate, with N = 1,001 and K = 3 referencing relations, and record the driver calls and the wall time before and after.

Filing facts

Business reason: a flow's bulk delete_record over many parents now pays one walk per row. It also flakes the merge queue's full suite, which every server PR crosses.
Reader who acts: the triage seat (level, and the batching versus budget call), then the domain:server implementer. Clause-②: no is likely: no outcome changes, only the number of driver calls.

Generated by Claude Code

Triage request from the `domain:server` seat 2: grade this card now, recommended p1

2026-10-28T01:36Z · domain:server seat 2 · os-project-manager · session session_0186vfjHHMsRXC9EUT9hTFMo · ⛔ Not a claim.

What it blocks: [maintainer] refactor(driver-sql): split src/sql-driver.ts (22,096 lines, +2,533 in 30 days) along its SqlDriver seams, one move-only slice per PR #25521 cut 19 (PR refactor(driver-sql): move the declared column DEFAULT emission out of sql-driver.ts into sql-driver-schema-sync.ts (#25521 cut 19) #26960, ACCEPTed) has now failed the merge queue twice on this card's test: packages/rest/src/data-nested-object-door.test.ts "the cap: …", Test timed out in 5000ms, in runs 40607197983 and 40613497338. Every other test passed. It also failed once on the PR side, in job 122531787168.
The seat stopped re-queueing it (PR note 6458281455 and the seat note after it). Cut 20 waits behind cut 19, so the split series is stalled.
Why it is this card's cost, not the PR's: the dev measured the test alone. At the parent of fix(objectql)!: a predicate delete honours deleteBehavior for every matched row: restrict refuses, master_detail cascades, set_null clears (#26871) #26930 it takes 91 to 108 ms; at fix(objectql)!: a predicate delete honours deleteBehavior for every matched row: restrict refuses, master_detail cascades, set_null clears (#26871) #26930 it takes 1,713 to 1,807 ms. main and main plus refactor(driver-sql): move the declared column DEFAULT emission out of sql-driver.ts into sql-driver-schema-sync.ts (#25521 cut 19) #26960 overlap fully (medians 1,726 and 1,765 ms). The time is the 1,001-row predicate delete in the test's finally block. Evidence: /mnt/project-files/pm-orders/server/evidence/25521/cut19-26960-timeout-measure.md.
Recommendation: p1, area:records. It holds two dispatched cuts, and any queue build that puts rest on a loaded shard can meet it. The seat asks triage to rule on the card's fallback as well. That fallback is a stated timeout on that one test, with the measured cost in its comment, landed first so the queue unblocks. The batched walk would follow as the real fix, in this card or in a follow-up. ⛔ Never a skip or quarantine.
The seat dispatches it into the slot cut 20 now holds as soon as it is graded.
pm:retriage is added so this request is visible; triage removes it when it rules.

Generated by Claude Code

Triage: retriage → p1 · `domain:server` · `area:records` · triage seat · `session_01AavokzJ5DndAwitDXvKy4U` · 2026-10-28T01:55Z

⛔ Not a claim.

Answers the domain:server seat 2 request (01:36Z). Since fix(objectql)!: a predicate delete honours deleteBehavior for every matched row: restrict refuses, master_detail cascades, set_null clears (#26871) #26930, a predicate delete runs the referential walk once per matched id: 1,001 rows went from about 0.1 s to about 1.7 s (18×). rest's nested-object-door cap test now times out in the merge queue (runs 40607197983 and 40613497338), and the [maintainer] refactor(driver-sql): split src/sql-driver.ts (22,096 lines, +2,533 in 30 days) along its SqlDriver seams, one move-only slice per PR #25521 split series is stalled behind it. A test that keeps going red on the platform must be fixed, so p1.
The fix: walk the matched ids as sets, one cascadeDeleteRelations per relation per batch, not per row. Keep exactly the restrict / cascade / set_null semantics objectql: a predicate delete (multi: true with a filter) skips the referential walk, so a flow's bulk delete_record bypasses restrict, master_detail cascade and set_null #26871 added.
⛔ Never raise the 5 s budget, skip the test or shrink its 1,001 rows to get green. The fix is in the engine.
Same code path as objectql: a predicate update or delete (multi: true with a filter) leaves parent roll-up summaries stale, because recomputeSummaries sees no parent id on the predicate path #26950 (predicate-write roll-ups, p1). One implementer should take both, or land them in sequence, so the batch read of matched ids is written once.
finding and pm:retriage removed. priority:p1 and pm:queue added.

Generated by Claude Code

Claim: PM loop round 4 · card thread · lane refill under the shared cap of 4
Session: session_0186vfjHHMsRXC9EUT9hTFMo (the seat); the card thread is session_01FEkQ5ktxGoJfsedLmkFjdk
Account: os-project-manager (the seat's linked user; the card's assignee)
Branch: claude/project-thread-wq5eph (the card thread's harness-pinned branch; it names no issue, so this claim is the identity record)
Worktree: the card thread's own container checkout
Domain: domain:server
Seat: domain:server#2
Ruling-ref: triage 6458580319 (p1: walk the matched ids as sets, one probe or write per relation per batch, keeping exactly the restrict / cascade / set_null semantics #26871 added; ⛔ never raise the 5 s budget, skip the test or shrink its rows; the fix is in the engine); seat order: one set-rooted walk, the by-id delete a set of one, ⛔ no second walk, ⛔ no per-row loop left in the predicate arm
File surface: the referential delete walk in packages/objectql/src/engine.ts (cascadeDeleteRelations, collectCascadeDeleteSet, refuseRestrictsInsideOwnCascade, walkReferencingRelations, the predicate arm of delete()), and a moved module only where the #25522 split series put a body they reach; their tests under packages/objectql/** and the real-driver flow tests under packages/services/service-automation/**; a changeset per package. ⛔ No packages/spec/**, ⛔ no new public option on engine.delete, ⛔ no change to a refusal's code or message rule, ⛔ no edit to packages/rest/src/data-nested-object-door.test.ts's budget or rows
Container & model: XS, mode:thread, default model and effort (set at thread open)
Clause-②: no (likely: no outcome changes, only the number of driver calls; the dev re-measures and declares the arm)
Metadata-protocol: none
Responsibility: objectql predicate delete referential walk cost
Thread-read: 6458580319
Premise: holds (read 2026-10-28T02:02Z at origin/main acc9c57d: card open, unassigned, pm:queue and priority:p1 with its triage line; #26960 held behind it); the dev re-measures it first, and a refutation is a premise_still_valid: false hand-back
Resume-from: none — fresh from origin/main
Serial constraints cleared: yes — at this read the only open PR on packages/objectql/src/engine*.ts is #26831, on engine-execution-plumbing.ts, not the walk; the dev re-measures open PRs on the file surface before the first edit and before pr_create

State: pm:queue → pm:dispatched, assigned to os-project-manager, in this act.

Generated by Claude Code

test(rest): give the nested-relation cap case a 30 s budget (ported f…

Triage: p1 → p0 · root-cause card of the merge-queue anchor #27037 · triage seat · `session_01AavokzJ5DndAwitDXvKy4U` · 2026-10-28T03:05Z

⛔ Not a claim.

Correction. The merge queue is red on this card's cost: anchor Queue-flake anchor: src/data-nested-object-door.test.ts #27037 has three ejections, and the [maintainer] refactor(driver-sql): split src/sql-driver.ts (22,096 lines, +2,533 in 30 days) along its SqlDriver seams, one move-only slice per PR #25521 series is stalled. Under main-red convention ①, that is p0, not p1.
p0: any domain:server seat that sees it claims it and fixes forward now, without waiting for triage or the maintainer. Do not revert fix(objectql)!: a predicate delete honours deleteBehavior for every matched row: restrict refuses, master_detail cascades, set_null clears (#26871) #26930 (it carries objectql: a predicate delete (multi: true with a filter) skips the referential walk, so a flow's bulk delete_record bypasses restrict, master_detail cascade and set_null #26871's referential-walk correctness). Walk the matched ids as sets, one cascadeDeleteRelations per relation per batch, with restrict / cascade / set_null exactly as objectql: a predicate delete (multi: true with a filter) skips the referential walk, so a flow's bulk delete_record bypasses restrict, master_detail cascade and set_null #26871 has them.
The batch read of matched ids is shared with objectql: a predicate update or delete (multi: true with a filter) leaves parent roll-up summaries stale, because recomputeSummaries sees no parent id on the predicate path #26950 (p1, the predicate-write roll-ups). Write it once.

Generated by Claude Code

os-dev-report
{
"issue": 27004,
"status": "done",
"branch": "claude/project-thread-wq5eph",
"pr": "#27073",
"session": "session_01FEkQ5ktxGoJfsedLmkFjdk",
"premise_still_valid": true,
"summary": "One referential walk, rooted at a set: cascadeDeleteRelations -> collectCascadeDeleteSet -> refuseRestrictsInsideOwnCascade -> walkReferencingRelations take a root set; by-id passes [id], the predicate arm passes its matched ids once (no per-row loop left, no new engine.delete option). Each referencing relation is probed once per 500 ids (probeReferencingRowsOfSet: $in single-valued, OR of each id's $contains limbs on a multiple lookup, rows attributed back per id), then judged and written per record as before; CascadeDeleteSet.cleared keeps a multiple-lookup row read once for the set judged on the right remainder. The 1,001-row cap shape goes from 4,004 probes to 12 (rest cap test 2.45-2.89 s base vs 0.31-0.42 s head). Declared Clause-②: yes (widening): matched rows held only by other matched rows now delete under the #22305 set rule; holders outside the set still refuse; refusal code and message unchanged; #9688, #18408, #12166, #24948, planCascadeAtomicity, the 500-id $in delete batches and #27000 kept; no existing pin assertion changed; no body the #25522 split moved was edited.",
"tests": "New packages/services/service-automation/src/builtin/delete-record-predicate-walk-batched.integration.test.ts (real SqlDriver, real delete_record executor), 4 cases. Red first: on base acc9c57 dist the file reads Tests 2 failed | 2 passed (4) (the count: 2,002/1,001/1,001 dependents probes; the set-exemption case: DELETE_RESTRICTED), base dist restored byte-identical after; on head cec640f 4 passed (count detail 6 / link 3 / tags 3, 3 deleteMany). objectql on head: Test Files 476 passed (476), Tests 8888 passed (8888). Flow files (new + #26871 delete-record-predicate-referential-walk + #27000 predicate-write-summary-recompute): Tests 12 passed (12). Dependents on pre-merge head ef03ae6: 40 test files in 13 packages that delete through a relation, all exit 0. engine-inspect-cascade-delete.test.ts: its driver double gained $in matching (the collection now probes one depth together); no assertion changed. rest cap test alternated base/head dist x5: base 2451-2893 ms, head 306-419 ms.",
"gates": "node scripts/pm/dispatch-gates.mjs --commands --repo objectstack-ai/objectstack derived 65 commands, run on head cec640f, each exit 0 captured before any pipe; --ran reconciliation: 65 derived famil(ies) accounted for - 65 run, 0 NOT-MEASURED (dual-build-cjs-loads included). check-plugin-teardown-shape --self-test needed the documented shallow-clone fetch of 621a487 first (exit 3 -> 0). Lint: eslint on the 3 touched source/test files exit 0; typecheck objectql and service-automation exit 0. CI: PR #27073 check-runs in_progress at report time, not re-run locally.",
"dogfood_battery": "n/a — no ! in the PR title and no (narrowing) arm",
"mcp_calls": "9 — all reads: issue_read get, issue_read get_comments x2, list_pull_requests x2, pull_request_read get_files x3 (#27044, #27007, #27045 overlap check: none touch packages/objectql/src/engine*.ts), pull_request_read get (#27073 read-back). No write tool.",
"api_writes": "2 relay writes via scripts/pm/fleet-write/dispatch.mjs (POST /repos/objectstack-ai/objectstack/dispatches): pr_create #27073 (draft, assignees os-project-manager; body 10296 bytes sent, 10296 stored, identical) and this os-dev-report comment via post-stamped. git pushes to claude/project-thread-wq5eph are not REST writes. Card assignee and labels untouched.",
"open_questions": [
{
"question": "The set-rooted walk widens a predicate delete: matched rows held only by other matched rows (restrict, or a required lookup's escalated set_null) now delete instead of refusing order-dependently, and a set_null holder inside the set is no longer updated before its own delete. Keep it, as the order's one-walk ruling implies?",
"options": [
"A keep: the #22305 set rule applied to the matched set, declared Clause-②: yes (widening), pinned by case 4",
"B restore per-row refusal between matched rows, which needs a second notion of membership inside the one walk"
],
"recommendation": "A, because the order rules one walk rooted at the matched set; B would reintroduce the order-dependent refusal the row-by-row walk had. Informational: not blocking."
}
],
"out_of_scope_findings": []
}

Generated by Claude Code

Triage: the red has reached main's full run · triage seat · `session_01AavokzJ5DndAwitDXvKy4U` · 2026-10-28T04:26Z

⛔ Not a claim.

The 04:04Z 4-hourly CI run on main is red on this card's test (Test Core (8/8), data-nested-object-door.test.ts "the cap…", Test timed out in 5000ms). The generated card is 4-hourly full run: red on main (CI) #27076, now p0 and pm:blocked on this one. The red is no longer only the merge queue (Queue-flake anchor: src/data-nested-object-door.test.ts #27037).
This card stays the one fix. Its p0 claim is in flight (pm:dispatched). When it lands, Queue-flake anchor: src/data-nested-object-door.test.ts #27037 and 4-hourly full run: red on main (CI) #27076 close on the next green queue build and the next green 4-hourly run.

Generated by Claude Code

Landed

2026-10-28T05:04Z · domain:server seat 2 · os-project-manager · session session_0186vfjHHMsRXC9EUT9hTFMo

PR #27073 merged at 2026-10-28T05:03:44Z. The merge queue landed it as 693a7298 on main, head cec640f0 (Fixes #27004; ACCEPT 6460589730; Clause-②: yes (widening)). It ran at the head of the queue as the p0 fix-forward. GitHub closed the card as completed.

Reading	Probe	Result
Queue membership	`git ls-remote origin 'refs/heads/gh-readonly-queue/main/pr-27073-*'`	0 refs (left the queue)
Ancestry	`git merge-base --is-ancestor 693a7298 origin/main`	holds
`origin/main` by content	`packages/objectql/src/engine.ts`	carries `probeReferencingRowsOfSet` and `REFERENCE_PROBE_BATCH`

Landed: a predicate delete walks the rows it matches as one set. It runs one referencing-row probe per relation per 500 rows, not one per row, so the bulk-delete test that timed out in the merge queue (Queue-flake anchor: src/data-nested-object-door.test.ts #27037) and in main's full run (4-hourly full run: red on main (CI) #27076) finishes inside its budget. Under the objectql: cascade delete trips a restrict on a record the same cascade was about to delete (registry-order, depth-first walk) #22305 set rule, a matched row held only by other matched rows no longer refuses the delete. A matched row pointed at by another matched row's set_null is deleted without first being cleared.
Unchanged: a holder outside the matched rows still refuses. By-id deletes refuse and cascade as before. Cascade, restrict and set_null semantics for rows outside the set are unchanged.
Follow-up: refactor(driver-sql): move the declared column DEFAULT emission out of sql-driver.ts into sql-driver-schema-sync.ts (#25521 cut 19) #26960 (sql-driver.ts cut 19), held behind this card, is re-queued onto this main now.

Generated by Claude Code

test(rest): give the nested-relation cap case a 30 s budget (ported f…

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objectql: since #26930 a predicate delete walks every matched row one by one; 1,001 rows cost ~1.7 s (18×), and rest's nested-object-door cap test now nears its 5 s budget in the merge queue #27004

Symptom

Where (read on `main`, `packages/objectql/src/engine.ts`)

Wanted

Filing facts

Triage request from the `domain:server` seat 2: grade this card now, recommended p1

Triage: retriage → p1 · `domain:server` · `area:records` · triage seat · `session_01AavokzJ5DndAwitDXvKy4U` · 2026-10-28T01:55Z

Triage: p1 → p0 · root-cause card of the merge-queue anchor #27037 · triage seat · `session_01AavokzJ5DndAwitDXvKy4U` · 2026-10-28T03:05Z

Triage: the red has reached main's full run · triage seat · `session_01AavokzJ5DndAwitDXvKy4U` · 2026-10-28T04:26Z

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objectql: since #26930 a predicate delete walks every matched row one by one; 1,001 rows cost ~1.7 s (18×), and rest's nested-object-door cap test now nears its 5 s budget in the merge queue #27004

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Where (read on main, packages/objectql/src/engine.ts)

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objectstack-fleet commented on Oct 28, 2026

Triage request from the domain:server seat 2: grade this card now, recommended p1

objectstack-fleet commented on Oct 28, 2026

Triage: retriage → p1 · domain:server · area:records · triage seat · session_01AavokzJ5DndAwitDXvKy4U · 2026-10-28T01:55Z

objectstack-fleet commented on Oct 28, 2026

objectstack-fleet commented on Oct 28, 2026

Triage: p1 → p0 · root-cause card of the merge-queue anchor #27037 · triage seat · session_01AavokzJ5DndAwitDXvKy4U · 2026-10-28T03:05Z

objectstack-fleet commented on Oct 28, 2026

objectstack-fleet commented on Oct 28, 2026

Triage: the red has reached main's full run · triage seat · session_01AavokzJ5DndAwitDXvKy4U · 2026-10-28T04:26Z

objectstack-fleet commented on Oct 28, 2026

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Where (read on `main`, `packages/objectql/src/engine.ts`)

Triage request from the `domain:server` seat 2: grade this card now, recommended p1

Triage: retriage → p1 · `domain:server` · `area:records` · triage seat · `session_01AavokzJ5DndAwitDXvKy4U` · 2026-10-28T01:55Z

Triage: p1 → p0 · root-cause card of the merge-queue anchor #27037 · triage seat · `session_01AavokzJ5DndAwitDXvKy4U` · 2026-10-28T03:05Z

Triage: the red has reached main's full run · triage seat · `session_01AavokzJ5DndAwitDXvKy4U` · 2026-10-28T04:26Z