pitrou commented on code in PR #46078: URL: https://github.com/apache/arrow/pull/46078#discussion_r2057821938
########## python/pyarrow/tests/test_fs.py: ########## @@ -1839,6 +1846,20 @@ def test_s3_real_aws_region_selection(): 's3://x-arrow-nonexistent-bucket?region=us-east-3') assert fs.region == 'us-east-3' + # Nonexistent bucket but "allow_delayed_open" delays failure until I/O is performed + fs = S3FileSystem(allow_delayed_open=True, allow_bucket_creation=False) + with pytest.raises(IOError, match="AWS Error NO_SUCH_BUCKET"): + with fs.open_output_stream("x-arrow-nonexistent-bucket/test.txt") as stream: + stream.write(b"test") + + # Nonexistent bucket. from_uri is not delaying evaluation and raising OSError + # S3FileSystem.from_uri also fails + fs, path = FileSystem.from_uri( + 's3://x-arrow-nonexistent-bucket/test.txt?allow_delayed_open=true') + with pytest.raises(IOError): + with fs.open_output_stream(path) as stream: + stream.write(b"test") Review Comment: Perhaps passing an explicit `region` would bypass the bucket lookup, though. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org