On Fri, 2009-10-02 at 13:52 +0300, Heikki Linnakangas wrote:
> Simon Riggs wrote:
> > I'd rather just skip this for now. It's a minor case anyway and there's
> > nothing stopping writing their own RunningXactData records with a
> > function, if it is needed. I can add a function for that.
>
> That won't help. There's no way to have it in a right place wrt. the
> shutdown checkpoint if it's triggered by a user-callable function.
I notice that you avoid saying "yes, I agree we should remove the two
checks".
I will add code to make a shutdown checkpoint be a valid starting place
for Hot Standby, as long as there are no in-doubt prepared transactions.
That way we know there are no xids still running and no locks, without
needing to write a record to say so.
-- Simon Riggs www.2ndQuadrant.com