full_scan is a boolean, it should not be assigned None
https://github.com/huggingface/datasets-server/blob/4a70eba13cc7c17be613aad88450c713c51c059f/services/worker/src/worker/job_runners/split/opt_in_out_urls_scan_from_streaming.py#L193
full_scan is a boolean, it should not be assigned None: https://github.com/huggingface/datasets-server/blob/4a70eba13cc7c17be613aad88450c713c51c059f/services/worker/src/worker/job_runners/split/opt_in_out_urls_scan_from_streaming.py#L193