Would https://www.python.org/dev/peps/pep-0446/ https://www.python.org/dev/peps/pep-0446/ have anything to do with this? We recently upgraded to celery 4 which

Would https://www.python.org/dev/peps/pep-0446/ https://www.python.org/dev/peps/pep-0446/ have anything to do with this? We recently upgraded to celery 4 which had a side effect of file descriptors leaking between master and child processes, and database fds were being used for redis. Still no idea how it's happening, but the linked PEP seems to suggest there may be issues that I don't quite understand.