Multiple serial update notifications are not buffered

[Endre Karlson]

If you create x records this will result in the system attempting to send out y notifications to the downstream dns servers like pdns. In a worse case scenario we might get throttled since we're sending a possible huge amount of consecutive NOTIFY messages.

Maybe these updates should be buffered up before attempting to notify the downstream targets?

[Federico Ceratto (federico-ceratto)]

https://review.openstack.org/#/c/247588/ implements a delayed notification mechanism.

The next step would be to update zone creation/update/deletion to make use of delayed notify.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/247588
Committed: https://git.openstack.org/cgit/openstack/designate/commit/?id=ecda910c2be4e9c733abf31eb34b1f624a7647ce
Submitter: Jenkins
Branch: master

commit ecda910c2be4e9c733abf31eb34b1f624a7647ce
Author: Federico Ceratto <email address hidden>
Date: Thu Nov 19 15:21:11 2015 +0000

    Add delayed NOTIFY

    Based on specs in https://review.openstack.org/#/c/246515
    Add database column zones.pending_notify and migration script
    Add Zone Manager Task to perform delayed NOTIFY
    Add Admin API method to count zones pending notify

    closes-bug: #1498462
    partial-bug: #1436210
    Change-Id: Ic5c2745bcd2cc057a42cb8edf21ed4c1a3ddc952
    Depends-On: If15594099eb7cf74f1c534a05884c2d2501e57e6

[Graham Hayes (grahamhayes)]

This has been open for a long period of time, with a low priority.

As a result, I am closing the bug.

If you feel this was in error, and this is important please re-open, and feel free to start working on the bug.