Re: Parallell Optimizer

On Thu, Jun 13, 2013 at 11:24 AM, Simon Riggs <simon@2ndquadrant.com> wrote:
> That idea is not dependent upon CSNs.
>
> It is an option for us to implement snapshot synchronisation now, we
> just haven't done it yet.
>
> I'm currently working on exporting/importing snapshots on standbys,
> which is a precursor to that idea.
>
> None of the above is any easier/harder with CSNs, nor would it
> delay/accelerate delivery of such features.

I agree that snapshot synchronization can be done with or without
CSNs, but surely synchronizing a single monotonically increasing
number is easier than synchronizing lists of running transactions.

Regards,
Ants Aasma
--
Cybertec Schönig & Schönig GmbH
Gröhrmühlgasse 26
A-2700 Wiener Neustadt
Web: http://www.postgresql-support.de