[openstack-dev] [Heat] Multi-engine design feedback requested

Jason Dunsmore jason.dunsmore at rackspace.com
Fri Aug 30 20:37:56 UTC 2013

Heat devs,

There's been some good discussion on the Etherpad:

I've added a "Votes" section under alternate options 1-5.  Please read
over the discussion and add your vote.


On Thu, Aug 29 2013, Jason Dunsmore wrote:

> Heat devs,
> Liang pointed out a race-condition in the current multi-engine
> implementation that will be difficult to fix without a DB lock.  I've
> discussed the multi-engine design with my teammates and written up a few
> alternative designs here:
> https://etherpad.openstack.org/vJKcZcQOU9
> Every design has its own downsides, so I was hoping to get some feedback
> from the core devs as to which one is preferable.
> Feel free to add comments in-line.  Please don't click "Clear Authorship
> Colors" ;)
> Thanks,
> Jason
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