Give the queue a retry door, and say when a backfill is still running by YellowSnnowmann · Pull Request #86 · tinyhumansai/tinymemory

YellowSnnowmann · 2026-08-23T16:29:43Z

Summary

MemoryMaintenance::retry_failed — requeue parked queue work and wake the pool, as one operation.
QueueStats.backfill_in_progress — a flag the counts beside it cannot express.
Together these are the last engine call in two OpenHuman files, so both leave that repo's direct-reference ratchet.

Problem

OpenHuman still calls tinymemory_core::queue directly in two shapes:

// the "retry failed" control
queue::store::requeue_failed(&cfg)?; queue::wake_workers();// after an embedder change
queue::requeue_failed_after_provider_change(&cfg)? // = the same pair, plus logging

and

queue::backfill_in_progress() || pending_jobs > 0

Both are the sole remaining blocker on config/ops/model.rs and inference/embeddings/rpc.rs, and two of three on the memory-tree RPC module.

Solution

retry_failed pairs the requeue with the wake, deliberately. Both host sites already did that pair by hand, so two separate contract methods would hand a caller a way to requeue and forget the wake — and rows moved back to ready that then sit until the next scheduled window look, from the user's side, exactly like a retry that did not run. The wake is conditional on something having moved; waking a pool to process nothing is a spurious wake-up on an idle laptop.

It answers a MaintenanceReport like its four siblings rather than a bare count, because that shape already answers the caller's question — how many, out of how many examined, plus a line to show. What counts as retryable stays the driver's judgement: the caller is asking for another attempt, not asserting one can succeed.

backfill_in_progress is not derivable from the counts. A backfill is a chain that re-enqueues itself, so between one link settling and the next being written there is an instant with nothing ready, nothing running, and the backfill unfinished. The consumer is absence-reasoning — is an empty semantic-recall result "no memory" or "not embedded yet" — and it gets that backwards at exactly that instant without the flag. It rides on QueueStats so it arrives with the numbers it has to be read next to, rather than as a second call that can disagree.

Both are defaulted on the trait: a driver with no queue has nothing to retry and no backfill running, which is true of it rather than a refusal.

Testing

retrying_moves_parked_work_back_to_ready_and_counts_it parks a real job through mark_failed_typed, retries, and checks the queue moved: failed 1 → 0, ready 0 → 1, changed == 1. It also asserts the empty case reports 0 rather than refusing, since a "retry failed" control has to tell the user that nothing was parked.

Registered in all four lists. The previous change in this area shipped three methods that were served and reachable from nowhere, because the interface block, the manifest, tinymemory_bus::METHODS and the loader's EXPECTED_METHODS are four hand-written lists and only the array length is compiler-checked. So the loader E2E is the proof here, not the unit tests: every_declared_method_is_actually_routed passes against the built cdylib.

Validation

cargo fmt --all -- --check # clean
cargo clippy --all-targets --all-features -- -D warnings # clean
cargo test --all-features # no failures
cargo test -p tinymemory-tinycortex --test full_provider_conformance # 12 passed
# module's own workspace — the root commands stop at its boundary
cargo fmt --manifest-path crates/tinymemory-module/Cargo.toml --all -- --check # clean
cargo clippy --manifest-path crates/tinymemory-module/Cargo.toml --all-targets -- -D warnings # clean
cargo build --locked --manifest-path crates/tinymemory-module/Cargo.toml --release # ok
cargo test --manifest-path crates/tinymemory-module/Cargo.toml --lib # 49 passed
# loader E2E, one process per test, against the built cdylib
the_manifest_declares_every_method_the_module_serves PASS
every_declared_method_is_actually_routed PASS
the_module_advertises_the_complete_tinymemory_api PASS
query_and_maintenance_families_dispatch_typed_requests PASS

Summary by CodeRabbit

New Features
- Added a maintenance operation to retry failed background jobs and return a processing report.
- Retried jobs are returned to the ready queue, and processing resumes automatically when needed.
- Queue statistics now indicate whether re-embedding backfill is in progress.
- Added the new retry operation to the TinyMemory API and service interface.
Tests
- Added coverage for retry behavior, including empty queues and successfully requeued jobs.

Two things OpenHuman still reaches into `tinymemory_core::queue` for, and both are the last blocker on the files that hold them. `retry_failed` requeues parked work and wakes the pool, as one operation. Both host call sites already did exactly that pair — the "retry failed" control calls `store::requeue_failed` then `wake_workers`, and the post-provider-change path calls the engine helper that does the same — so splitting them across two contract methods would offer a caller a way to requeue and forget the wake. Rows moved back to `ready` and left there until the next scheduled window are indistinguishable, from the user's side, from a retry that did not run. It answers a `MaintenanceReport` like its four siblings rather than a bare count, because the caller's question is the one that shape already answers: how many, out of how many looked at, and a line to show. The wake is conditional on something having moved; waking a pool to process nothing is a spurious wake-up on an idle laptop. `QueueStats` gains `backfill_in_progress`, which is not derivable from the counts it sits beside. A backfill is a chain that re-enqueues itself, so between one link settling and the next being written there is an instant with nothing ready, nothing running, and the backfill not finished. The consumer is absence-reasoning — deciding whether an empty semantic-recall result means "no memory" or "not embedded yet" — and it gets that wrong at exactly that instant without this. Registered in all four lists this time: the interface block, the manifest, `tinymemory_bus::METHODS` with its length, and the loader's `EXPECTED_METHODS`. The last change taught that the compiler checks only the array length, so the loader E2E is the thing that proves it: `every_declared_method_is_actually_routed` passes against the built cdylib.

coderabbitai · 2026-08-23T16:29:55Z

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📝 Walkthrough

Walkthrough

The change adds retry_failed to the maintenance API and TinyBus surface. The module forwards the operation to providers. Tinycortex requeues failed jobs, wakes workers, reports retry counts, and exposes backfill status.

Changes

Retry failed maintenance

Layer / File(s)	Summary
Maintenance and bus contracts `crates/tinymemory-api/src/provider/records.rs`, `crates/tinymemory-bus/src/names.rs`, `crates/tinymemory-bus/src/provider/types.rs`, `crates/tinymemory-bus/src/lib.rs`	Defines `MemoryMaintenance::retry_failed`, adds the `RetryFailed` method name, updates the method count, and adds `QueueStats.backfill_in_progress`.
Module routing and coverage `crates/tinymemory-module/src/lib.rs`, `crates/tinymemory-module/src/service/mod.rs`, `crates/tinymemory-module/src/service/test.rs`, `crates/tinymemory-module/tests/module_e2e.rs`	Exports and routes `RetryFailed`, enforces the maintenance capability, maps provider errors, and updates method-list checks.
Provider retry execution `crates/tinymemory-tinycortex/src/engine/mod.rs`, `crates/tinymemory-tinycortex/tests/full_provider_conformance.rs`	Requeues failed jobs, wakes workers when needed, reports examined and retried counts, exposes backfill state, and tests empty and non-empty queues.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk:🟡 Moderate · up to 77ad3

The new queue status can incorrectly report that backfill is running for a store with no active backfill when multiple stores share a process, causing misleading degraded-recall reporting. This bounded correctness issue should be fixed before merge.

Suggested reviewers:senamakel

Poem

A rabbit taps the retry queue,
Failed jobs hop to ready too.
Workers wake and reports grow,
Backfill status starts to show.
TinyBus carries the call along—
And every queue job joins the song.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes both queue retry support and backfill status reporting.
Docstring Coverage	✅ Passed	Docstring check was indeterminate for this PR — some files could not be analyzed in time. Not blocking.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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Actionable comments posted: 1

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Inline comments:
In `@crates/tinymemory-tinycortex/src/engine/mod.rs`:
- Around line 1278-1283: Update the backfill tracking used by queue_stats so it
is scoped to the queried store or workspace rather than process-global. Replace
the no-argument backfill_in_progress lookup in MemoryService::open_store’s
QueueStats path with the queue/workspace-aware state for config, while
preserving the existing QueueStats field and behavior for the matching store.

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📥 Commits

Reviewing files that changed from the base of the PR and between cb58afb and 77ad343.

📒 Files selected for processing (10)

crates/tinymemory-api/src/provider/records.rs
crates/tinymemory-bus/src/lib.rs
crates/tinymemory-bus/src/names.rs
crates/tinymemory-bus/src/provider/types.rs
crates/tinymemory-module/src/lib.rs
crates/tinymemory-module/src/service/mod.rs
crates/tinymemory-module/src/service/test.rs
crates/tinymemory-module/tests/module_e2e.rs
crates/tinymemory-tinycortex/src/engine/mod.rs
crates/tinymemory-tinycortex/tests/full_provider_conformance.rs

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…-door

Review caught that `backfill_in_progress()` is a process-global with no workspace argument, while `open_store` serves one store per memory subtree in a single process. A profile with dedicated memory running a backfill would make every other store answer `true`. The bleed is not new — the host already called that same global directly — but putting it on `QueueStats` made it worse in a way worth naming. `queue_stats` is asked of one bound provider for one store, so a field on it reads as per-store. A global behind a per-store API is harder to notice than a global that looks like one, and the caller has no way to find out. Scoping it properly means tracking the state per workspace where it is set, which is in tinycortex, behind a vendored submodule. That is its own change in its own repo, and doing it badly here would be worse than not doing it. So the field goes and the host keeps calling the global, visibly, until the engine can answer per store. `retry_failed` is unaffected — it takes no such shortcut, and it is what the two OpenHuman files were actually waiting on.

tinysweeper

tinysweeper found nothing blocking. Approving.

$0.0000 · 0 in / 0 out · 472 embedded · openrouter/openai/text-embedding-3-small

tinysweeper · 2026-08-23T17:52:04Z

How this change flows

2 changed behaviours across 22 relationships. 6 surrounding behaviours are shown (60 graph nodes walked). 32 further behaviours left out to keep the diagram readable.

flowchart LR
n0["MemoryService<br/>changed"]:::changed
n1["...embers_are_exactly_the_published_contract<br/>changed"]:::changed
n2["...nt_opens_reuse_the_registered_object_path"]:::impacted
n3["...ed_and_only_success_counts_toward_the_cap"]:::impacted
n4["...e_cap_is_reached_through_successful_opens"]:::impacted
n5["open_store"]:::impacted
n6["root"]:::impacted
n7["test_provider"]:::impacted
n1 -->|uses| n0
n2 -->|uses| n0
n2 -->|calls| n5
n2 -->|tests| n5
n2 -->|calls| n6
n2 -->|tests| n6
n2 -->|calls| n7
n2 -->|tests| n7
n3 -->|uses| n0
n3 -->|calls| n5
n3 -->|tests| n5
n3 -->|calls| n6
n3 -->|tests| n6
n3 -->|calls| n7
n3 -->|tests| n7
n4 -->|uses| n0
n4 -->|calls| n5
n4 -->|tests| n5
n4 -->|calls| n6
n4 -->|tests| n6
n4 -->|calls| n7
n4 -->|tests| n7
classDef changed fill:#0d4429,stroke:#238636,color:#e6edf3
classDef impacted fill:#161b22,stroke:#6e7681,color:#c9d1d9
classDef flagged fill:#5a1e02,stroke:#d93f0b,color:#ffffff
classDef blocking fill:#67060c,stroke:#f85149,color:#ffffff

_{Green: changed behaviour. Grey: surrounding behaviour. Arrows name the call, use, implementation, or test relationship. Orange: has findings. Red: has a finding that blocks the merge.}

…ly has `backfill_in_progress` was briefly a `QueueStats` field in #86 and was dropped there for a good reason: it is a process-global, while `open_store` serves one store per memory subtree in a single process, so a per-store snapshot carrying it promised a scope it does not have. Leaving the host to call the global directly answers that objection and creates the other half of the same problem. Once re-embedding runs in the module — which is what `Maintenance::reembed` now does — the host-linked static is not merely coarse, it is always `false`, because a `cdylib` has its own statics. A frontend poll deciding whether to keep a re-embed modal open then closes it during exactly the gap the flag exists to cover. Both objections are satisfied by the same shape, which is neither of the two tried so far: a standalone `Maintenance` member, documented as driver-process- wide and explicitly not store-scoped. The honest scope lives in the signature instead of being implied away by the struct it sits in, and the answer comes from the bound driver, which is where the backfill actually runs. It stays undivable from the counts: a backfill re-enqueues itself, so between one link settling and the next being written there is an instant with nothing ready, nothing running and the work unfinished. The conformance test pins that instant — flag up, both counts zero — and restores the global on drop so a failing assertion cannot leak into the rest of the process. Registered in all four lists: the interface block, the module manifest, `tinymemory_bus::METHODS` with its length, and the loader's `EXPECTED_METHODS`. `every_declared_method_is_actually_routed` passes against the built cdylib. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

coderabbitaiBot requested changes Aug 23, 2026
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Comment threadcrates/tinymemory-tinycortex/src/engine/mod.rs Outdated

YellowSnnowmann mentioned this pull request Aug 23, 2026
Pin an npm that can resolve the AgentMemory image #87
Merged

YellowSnnowmann added 2 commits August 23, 2026 22:41

Merge remote-tracking branch 'origin/main' into feat/5560-queue-retry…
b5a0f36
…-door

YellowSnnowmann marked this pull request as ready for review August 23, 2026 17:51

YellowSnnowmann merged commit 3802f6c into tinyhumansai:mainAug 23, 2026
22 checks passed

tinysweeperBot approved these changes Aug 23, 2026
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tinysweeperBot added the priority: p3 Whenever. Cosmetic, a nicety, or a cleanup with no user visible effect. label Aug 23, 2026

This was referenced Aug 23, 2026
Read the memory pipeline's diagnostics through the contract tinyhumansai/openhuman#5693
Merged
Answer the backfill flag through the contract, at the scope it actually has #89
Merged

This was referenced Aug 24, 2026
Add the three contract members one OpenHuman migration needs #90
Merged
Give the host every read it still runs raw SQL for #99
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Give the queue a retry door, and say when a backfill is still running - #86

Give the queue a retry door, and say when a backfill is still running#86
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