This is an expected behavior if you are using oslo.messaging version 4.1.0 or higher, since [1] made the changes that make reply and fanout queues expire instead of auto-delete. The stale fanout queues should be deleted after rabbit_transient_queues_ttl seconds.
This is an expected behavior if you are using oslo.messaging version 4.1.0 or higher, since [1] made the changes that make reply and fanout queues expire instead of auto-delete. The stale fanout queues should be deleted after rabbit_ transient_ queues_ ttl seconds.
[1] https:/ /review. openstack. org/#/c/ 243845/