We switched to alembic and since I don't see any occurrence of this issue in nova. So I'm marking this as incomplete and let it expire.
http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22pymysql.err.InterfaceError%5C%22%20AND%20build_branch%3A%5C%22master%5C%22%20AND%20build_status%3A%5C%22FAILURE%5C%22%20AND%20project%3A%5C%22openstack%2Fnova%5C%22
We switched to alembic and since I don't see any occurrence of this issue in nova. So I'm marking this as incomplete and let it expire.
http:// logstash. openstack. org/#dashboard/ file/logstash. json?query= message% 3A%5C%22pymysql .err.InterfaceE rror%5C% 22%20AND% 20build_ branch% 3A%5C%22master% 5C%22%20AND% 20build_ status% 3A%5C%22FAILURE %5C%22% 20AND%20project %3A%5C% 22openstack% 2Fnova% 5C%22