Reviewed: https://review.openstack.org/539617 Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=fdea8b723ba5a25ea9dc0917401fbb1401e05ee3 Submitter: Zuul Branch: master
commit fdea8b723ba5a25ea9dc0917401fbb1401e05ee3 Author: Dan Smith <[email protected]> Date: Wed Jan 31 09:30:11 2018 -0800 Make host_manager use scatter-gather and ignore down cells This makes the host_manager query for computes in parallel across all the cells. It also ignores cells that fail or time out so that scheduling can proceed. Closes-Bug: #1746561 Change-Id: I48d8b763f475c010fa48ee1db232a6d3ae75f5e6 ** Changed in: nova Status: In Progress => Fix Released -- 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/1746561 Title: Make host_manager use scatter-gather and ignore down cells Status in OpenStack Compute (nova): Fix Released Bug description: Currently the "_get_computes_for_cells" function in the host_manager of scheduler runs sequentially and this affects the performance in case of large deployments (running a lot of cells) : https://github.com/openstack/nova/blob/stable/pike/nova/scheduler/host_manager.py#L601 So it would be nice to use the scatter_gather_all_cells function to do this operation in parallel. Also apart from the performance scaling point of view, in case connection to a particular cell fails, it would be nice to have sentinels returned which is done by the scatter_gather_all_cells. This helps when a cell is down. To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1746561/+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
