Comment 1 for bug 1542491

Could you please tell us which Nova version is corresponding to the Ubuntu package 1:2015.1.2-0ubuntu2~cloud0 ?

Also, could you please tell us if another request coming in would get the accurate number of hosts within the Aggregate ? In general, you don't need to restart the scheduler service, because updates are RPC'd (fanout) to the scheduler which should get the update anyway.