nova team mailing list archive

[Michael Gundlach <michael.gundlach@xxxxxxxxxxxxx>]

Eric,

On Wed, Aug 4, 2010 at 2:20 PM, Eric Day <eday@xxxxxxxxxxxx> wrote:

> >    In your new arch diagram (
> http://oddments.org/tmp/architecture_new.png)
> >    isn't the host/guest cache the same thing as the datastore? The
> scheduler
>
> The host/guest cache is the in-memory table with data it needs
> about hosts, clusters, and guests to answer some queries and route
>

If the scheduler service is a cluster of replicas, will they all duplicate
the entire table in memory?  Do the tables need to be consistent between
them (do hosts have to push updates to every scheduler worker?)  Would it be
simpler to pull that out into a memcached that they share?

Michael