Now Watcher's datamodel uses human_id to store the display_name of the intance. But the value of human_id is not reliable. About the reason, please see[1]. The solution is to add a 'name' field to save the display_name of the instance, and ensure that the value of this field is the same when the datamodel is created and when the datamodel is updated. About the 'human_id', We will remove it in the future. References: [1]. https://bugs.launchpad.net/watcher/+bug/1833665 20190619 Watcher meeting IRC Log: [1]. http://eavesdrop.openstack.org/irclogs/%23openstack-watcher/%23openstack-watcher.2019-06-19.log.html [2]. http://eavesdrop.openstack.org/meetings/watcher/2019/watcher.2019-06-19-08.00.log.html#l-47 Change-Id: I6976759629a4feedee09261cc1dac935e050202a Closes-Bug: #1833665