| From: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
|---|---|
| To: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: age(xid) on hot standby |
| Date: | 2012-01-18 19:42:45 |
| Message-ID: | 1326915765.9180.21.camel@vanquo.pezone.net |
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| Lists: | pgsql-hackers |
On mån, 2012-01-16 at 22:59 -0300, Alvaro Herrera wrote:
> Excerpts from Tom Lane's message of lun ene 16 12:27:03 -0300 2012:
> >
> > Alvaro Herrera <alvherre(at)commandprompt(dot)com> writes:
> > > Excerpts from Peter Eisentraut's message of dom ene 15 10:00:03 -0300 2012:
> > >> On ons, 2011-12-28 at 14:35 -0500, Tom Lane wrote:
> > >>> The trouble with using ReadNewTransactionId is that it makes the results
> > >>> volatile, not stable as the function is declared to be.
> >
> > >> Could we alleviate that problem with some caching within the function?
> >
> > > Maybe if we have it be invalidated at transaction end, that could work.
> > > So each new transaction would get a fresh value.
> >
> > Yeah, I think that would work.
>
> So who's going to work on a patch? Peter, are you? If not, we should
> add it to the TODO list.
Not at this very moment, but maybe in a few weeks.
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