Note that the scatter/gather routine when fetching services from the HostAPI was already backported to pike:
https://review.opendev.org/#/q/I90b488102eb265d971cade29892279a22d3b5273 ** Also affects: nova/queens Importance: Undecided Status: New ** Also affects: nova/rocky Importance: Undecided Status: New ** Also affects: nova/stein Importance: Undecided Status: New ** Changed in: nova/stein Importance: Undecided => Medium ** Changed in: nova/stein Status: New => Confirmed ** Changed in: nova Importance: High => Medium ** Changed in: nova/rocky Status: New => Confirmed ** Changed in: nova/rocky Importance: Undecided => Medium ** Changed in: nova/queens Importance: Undecided => Medium ** Changed in: nova/queens Status: New => Confirmed -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). https://bugs.launchpad.net/bugs/1801897 Title: List AVZs can take several seconds Status in OpenStack Compute (nova): In Progress Status in OpenStack Compute (nova) queens series: Confirmed Status in OpenStack Compute (nova) rocky series: Confirmed Status in OpenStack Compute (nova) stein series: Confirmed Bug description: Getting the list of AVZs can take several seconds (~30 secs. in our case) This is noticeable in Horizon when creating a new instance because the user can't select an AVZ until this completes. workflow: - get all services from all cells (~10000 for us) - fetch all aggregates which are tagged as an AVZ - construct a dict of {'service['host']: avz.value} - return a dict of {'avz_value': list of hosts} - separate available and not available zones. Reproducible in Queens, Rocky To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1801897/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
