On Fri, Oct 8, 2010 at 6:00 PM, Simon Riggs <simon@2ndquadrant.com> wrote:
> >From the perspective of an observer, randomly selecting a standby for
> load balancing purposes: No, they are not guaranteed to see the "latest"
> answer, nor even can they find out whether what they are seeing is the
> latest answer.
To guarantee that each standby returns the same result, we would need to
use the cluster-wide snapshot to run queries. IIRC, Postgres-XC provides
that feature. Though I'm not sure if it can be applied in HS/SR.
Regards,
--
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center
