Fourth review follow-up on #579.
The classifier added in c9448ae covered 401/403 and 5xx, but not 404. A missing
model or a wrong embedding route answers with 404 (SDK `NotFoundError`), which
no individual input can explain, so the batch still fell through to
`_embed_individually()`: a ten-item request against a bad model name produced
eleven requests, all failing for the same reason.
404 is now part of the provider-wide set (`_PROVIDER_WIDE_STATUS_CODES`) and
`NotFoundError` joins the class-name fallback. Like 401/403 it is not
transient, so the request is reported as failed once instead of being retried
or split. The context-length `400` is deliberately left out of that set: an
over-limit item is the one status a single input can explain by itself, so it
has to stay isolatable.
Regression coverage:
- test_provider_wide_statuses_exclude_input_dependent_bad_request
401/403/404/500 -> provider-wide; an over-limit 400 -> not provider-wide.
- test_provider_wide_not_found_errors_are_not_split
404 -> batch sizes [10], no sleeps, no single-item requests.
The existing context-length isolation, 401/403, 5xx, quota, rate-limit and SDK
transport tests are retained.
Local verification with the repo's own hook arguments:
pylint -> Your code has been rated at 10.00/10, exit 0
black -> 2 files would be left unchanged
flake8 -> clean
Branch-order discriminator check (classifiers extracted from the production
file and executed against each error type):
case old new
400 context-length SPLIT SPLIT
401 / 403 SPLIT STOP
404 NotFoundError SPLIT STOP
500 SPLIT RETRY
SDK APIConnectionError SPLIT RETRY
SDK APITimeoutError SPLIT RETRY
builtin ConnectionError RETRY RETRY
builtin TimeoutError RETRY RETRY
429 RETRY RETRY
insufficient_quota STOP STOP
eba753f783