On Tue, Aug 16, 2016 at 10:15 AM, Craig Ringer <craig@2ndquadrant.com> wrote:
> I'm surprised the 32-bit xid was ever exposed to the user, rather than a
> 64-bit epoch-extended xid.
Once upon a time we didn't have epoch counting at all.
I don't think it would be a bad idea to clean up everything to do with
xids so that everything user-facing is epoch-aware. Of course you
don't always have the epoch but if we're careful about where users can
see xids they should never see an xid from an old epoch. That could be
a problem for internal tools like pageinspect or xlogdump but
shouldn't be a problem for any real production api.
--
greg
