Lots of "NotSupportedWarning: Configuration option(s) ['use_tpool'] not supported" observed in gate-cinder-python27 logs

[Vivek Dhayaal]

There are lots of instances of "NotSupportedWarning: Configuration option(s) ['use_tpool'] not supported" observed in gate-cinder-python27 logs.
eg:
http://logs.openstack.org/02/282002/1/check/gate-cinder-python27/332a226/console.html.gz

<snip>
...
2016-02-18 22:42:12.214 | /home/jenkins/workspace/gate-cinder-python27/.tox/py27/local/lib/python2.7/site-packages/oslo_db/sqlalchemy/enginefacade.py:241: NotSupportedWarning: Configuration option(s) ['use_tpool'] not supported
2016-02-18 22:42:12.214 | exception.NotSupportedWarning
2016-02-18 22:42:12.214 |
2016-02-18 22:42:12.224 | {3} cinder.tests.unit.api.contrib.test_admin_actions.AdminActionsAttachDetachTest.test_volume_force_detach_raises_remote_error [3.892236s] ... ok
2016-02-18 22:42:12.224 |
2016-02-18 22:42:12.224 | Captured stderr:
2016-02-18 22:42:12.224 | ~~~~~~~~~~~~~~~~
2016-02-18 22:42:12.224 | /home/jenkins/workspace/gate-cinder-python27/.tox/py27/local/lib/python2.7/site-packages/oslo_db/sqlalchemy/enginefacade.py:241: NotSupportedWarning: Configuration option(s) ['use_tpool'] not supported
2016-02-18 22:42:12.224 | exception.NotSupportedWarning
...
</snip>

[Ivan Kolodyazhny (e0ne)]

I don't see these warning anymore

[Stephen Finucane (stephenfinucane)]

These occur on the latest DevStack deploy. The opt and the warning both originate in glance so I'm reassigning.

[Stephen Finucane (stephenfinucane)]

Correction - they originate in oslo.db

[Takashi Kajinami (kajinamit)]

Seems this was fixed by https://review.opendev.org/c/openstack/oslo.db/+/611310 ?