Zookeeper to MongoDB transition

[Frank Mueller]

> I suggest the following: let's add a new experimental mstate package
> in the project, and start porting code over from the state package
> onto it. The documentation, the public API, and the tests for the
> public API should remain unchanged between both packages. We have
> internal tests (for topology, mainly) that will be dropped, though.
> 
> This allows the experiment to move forward in an integrated way
> without disturbing the main code path, and in a way that everybody has
> visibility and can comment on the process and progress.
> 
> How does that sound to everybody?

Sounds like a very good path with almost no risk. I'm very interested in the implementation and if we find a model with no splitting of data in nodes and topology.

mue

--
** Frank Mueller <frank.mueller at canonical.com>
** Software Engineer - Juju Development
** Canonical