Two pre-existing test failures on main, unrelated to any feature change:
- Doris VectorRetrieve/KeywordsRetrieve inline LIMIT as a literal (Doris
does not support placeholders for LIMIT/OFFSET), but the SQL-shape tests
still expected `LIMIT ?` with TopK as a bound arg. Match the literal
LIMIT and drop the extra argument.
- TestOssEnsureBucket_CreateFails used the bucket name "test-bucket",
which already exists globally on OSS, so IsBucketExist short-circuited
and the create path never ran. Use a non-existent bucket name so the
create-with-invalid-credentials path is actually exercised.
wizardchen
40f217c228