Inada Naoki

I made a pull request to uwsgi that fixes no atexit call issue when mixing `threads` and `max-requests`.

UPDATE: This is not caused by BatchSpanProcessor. Python doesn't wait daemon threads at all. I'm sorry about it. This is caused by uwsgi. uwsgi uses pthread_cancel() to stop worker even...

max-requests-delta will help you. Although this is 3.0 only option.