That also explains why the warning in _close_connection doesn't have any hits in logstash:
http://logstash.openstack.org/#eyJzZWFyY2giOiJtZXNzYWdlOlwiQ29ubmVjdGlvbiB0byBsaWJ2aXJ0IGxvc3RcIiIsImZpZWxkcyI6W10sIm9mZnNldCI6MCwidGltZWZyYW1lIjoiNjA0ODAwIiwiZ3JhcGhtb2RlIjoiY291bnQiLCJ0aW1lIjp7InVzZXJfaW50ZXJ2YWwiOjB9LCJzdGFtcCI6MTM4NjM0NzYwNjUwN30=
That also explains why the warning in _close_connection doesn't have any hits in logstash:
http:// logstash. openstack. org/#eyJzZWFyY2 giOiJtZXNzYWdlO lwiQ29ubmVjdGlv biB0byBsaWJ2aXJ 0IGxvc3RcIiIsIm ZpZWxkcyI6W10sI m9mZnNldCI6MCwi dGltZWZyYW1lIjo iNjA0ODAwIiwiZ3 JhcGhtb2RlIjoiY 291bnQiLCJ0aW1l Ijp7InVzZXJfaW5 0ZXJ2YWwiOjB9LC JzdGFtcCI6MTM4N jM0NzYwNjUwN30=