jpmschweitzerandClaude
e45de4fec7
Two defects with one shape: an execution reaches a terminal condition and the
orchestrator fails to write it down, so the system's own record disagrees with
what happened. Neither produced an error. Both produced silence.
T-2 -- a restart mid-task unscheduled that task forever.
get_tasks_for_minute excludes any task holding a task_executions row with
status='running'. The row is written before the executor runs and updated
after, so a process dying in between left it 'running' permanently, and the
task was then excluded from every future minute with no error, no alarm and no
log line. It did not fail; it went quiet.
test_example_task had held such a row since 2025-12-07 -- 5916 hours. It is
disabled, so nothing was broken by that instance; the mechanism is the point,
and the exposure is daily, because Watchtower restarts this container at 4 AM
while the config backup starts at 03:05 and runs ~21 minutes.
Startup now reconciles them, where the reasoning is sound by construction: this
process has just begun, so nothing it can see is genuinely running.
Marked 'orphaned', not 'failed'. When the process dies mid-task the work may
well have completed -- a backup that finished and never got to update its row
is indistinguishable from one that died halfway -- and 'failed' would assert an
outcome nobody observed. Same error as the health-report diagnostic fixed in
18be804: naming a cause you did not witness.
Not extended to a duration-based sweep. While this process lives, execute_task's
finally clause always closes the row, so a stale row implies a dead owner. A
time-based rule would have to tell a slow task from a dead one, and getting that
wrong closes the record of a task still working.
T-3 -- the 'timeout' status was unreachable.
execute_task has an `except asyncio.TimeoutError` branch that records
status='timeout'. It could never run: _run_executor wrapped the awaited call in
`except Exception`, and since 3.11 asyncio.TimeoutError IS the builtin
TimeoutError (OSError -> Exception), so the broad handler caught it first and
converted it to an ordinary error tuple. Confirmed in the deployed runtime and
against the history -- 18,785 executions since 2025-12-07, of which 'timeout'
rows: zero. Every timeout in eight months was filed as a generic failure,
erasing the distinction between "too slow for its window" and "broken".
A narrower except after a broader one is dead code, and no linter is configured
here to say so.
One trap in fixing it: while the branch was unreachable a timeout travelled the
normal path, which DOES update scheduled_tasks. Making the branch reachable
without that write would have traded a wrong status for a stale one, so
_update_task_outcome now mirrors terminal outcomes onto the parent row.
The timeout message also states that the work may still be running -- after
T-74 executors are handed to asyncio.to_thread, and a thread cannot be
cancelled, so wait_for frees the loop while the work continues.
Both fixes are mutation-checked: removing the startup call fails the ordering
test, removing the narrow except clause fails the propagation test. Suite goes
118 -> 126 passing with the same 36 pre-existing failures.
Co-Authored-By: Claude <noreply@anthropic.com>