Take the file row with FOR UPDATE SKIP LOCKED when the offload job
starts and skip the run when the row is locked or gone, so the job
never runs while the file is being edited. Every live hot-storage
row of the file moves to cold storage inside one all-or-nothing
transaction, and the handler answers a summary map with the
offloaded rows, bytes and per-type stats.
Add bounded metrics for the job: rows and bytes counters labeled by
row type on successful runs only, and a timing histogram with the
ok, skip and error outcomes. The job definition now requires
metrics, the recorders live in app.jobs.metrics, and the existing
ephemeral job timing histogram pins its buckets.
Cover the job with a new test namespace: the happy path, the locked
row, missing and deleted files, the rows and bytes summary with its
no-op rerun, the whole-file abort on storage failure, the metric
definitions and emissions, and the submit-time params validation.
An end-to-end suite reads, snapshots, writes, exports, imports and
deletes offloaded files; concurrency tests pin the stale-revn skip,
the blocked-edit retry and the reclaimable orphans of a partial
failure. The file-gc scheduler test pins one job per eligible file,
and the scheduler private helper drops its bang.
Document the lock invariant, the deliberate no-pacing decision and
the metric label sets in the backend storage memory and the
configuration guide.
Related to #12398.
AI-assisted-by: muse-spark-1.3-contributor
* 🎉 Move backend jobs to the unified job table substrate
Replace the generic 'task' table with a unified 'job' table as the
durable substrate for all backend jobs, and migrate every producer
and consumer to it. The legacy 'task' table stops receiving writes
but stays dormant (still cleaned by tasks-gc); upload-session
chunking and the other post-branch upstream changes are preserved.
New 0154 migration creates the 'job' table: dispatch and lifecycle
columns (name, queue, priority, scheduled_at, retries, status,
timestamps, props) plus optional user-facing ledger columns
(profile_id, target, progress, error, result, resource_id,
expires_at). No modified_at trigger: the application updates it on
every write for lease and orphan detection. Partial indexes cover
the dispatcher claim query, orphan scanning, and per-profile
listing.
New app.jobs public API: submit!/invoke!, heartbeats and progress
reporting, a precompiled job-def registry (name, schema, handler,
decoder, validator), an ephemeral request/response mode, and a
management API for external workers. The dispatcher claims
new/retry rows (FOR UPDATE SKIP LOCKED) with a plain JSON redis
payload and marks lease-expired running rows as orphaned; the
runner executes per-queue with the same retry conventions.
New jobs GC (daily): deletes expired rows and retains internal
terminal rows per :jobs-retention, touching referenced storage
objects so storage-gc-touched reclaims them. Job resources live in
a dedicated job-resource bucket with a reclaim branch in
storage-gc-touched.
All production call-sites (sendmail, delete-object, demo-purge,
file-gc, offload, webhooks, quotes, nitrate bulk delete,
snapshots, telemetry) and the ten cron tasks now submit through
app.jobs; cron is a pure scheduler and the legacy worker registry,
task-table inserts, and per-namespace handlers are removed.
Includes migrations, dispatcher, runner, jobs, request/response,
jobs GC, management API, and cron test suites.
AI-assisted-by: glm-5.3-flash
AI-assisted-by: muse-spark-1.3-contributor
AI-assisted-by: kimi-k3
AI-assisted-by: mimo-v2.5
* ✨ Address review comments on jobs substrate
Resolves the four open review threads on the jobs PR. Orphaned jobs
are now marked aborted, a system-side terminal state with no retry:
the dispatcher sweep stores the end event with outcome aborted in a
single bulk insert in the same transaction, records the terminal
outcome next to the orphaned counter, and reports an error log;
orphans keep alerting through the log and the counter, with no
user notification.
The aborted state is terminal everywhere: the status CHECK, the
sweep, the lifecycle writers, the jobs GC retention, the backlog
gauges and the user status mapping, with tests covering each
transition. The claim comment, the 2.20 doc version and the legacy
task table notes are corrected, and objects-gc heartbeats per chunk.
AI-assisted-by: muse-spark-1.3-contributor
