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On 13/11/14 09:31, Jastrzebski, Michal wrote:
> Guys, I don't think we want to get into this cluster management mud. You say let's
> make observer...and what if observer dies? Do we do observer to observer? And then
> there is split brain. I'm observer, I've lost connection to worker. Should I restart a worker?
> Maybe I'm one who lost connection to the rest of the world? Should I resume task and risk
> duplicate workload?

I think you're misinterpreting what we mean by "observer". See 
https://wiki.openstack.org/wiki/Heat/ConvergenceDesign

- ZB