Comment 2 for bug 1812672

I can't find so far any relevant detail which could help to fix the issue.

The package versions used for Queens is oslo.cache 1.28 and for Rocky oslo.cache 1.30 I did not find any relevant changes. On Bionic we ship python-memcache 1.57.

I may need try to reproduce the issue locally since it's not clear for me why commenting [0] is fixing the it.

Did you try to restart the service without to comment line 48? also if you have a chance to clean all *.pyc from /usr/lib/python3/dist-packages/oslo_cache/ then restart the service (again without commenting anything).

In the meantime I'm continuing my investigation.

[0] https://github.com/openstack/oslo.cache/blob/master/oslo_cache/_memcache_pool.py#L48