| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Peter Eisentraut <peter_e(at)gmx(dot)net>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: age(xid) on hot standby |
| Date: | 2012-01-17 01:59:00 |
| Message-ID: | 1326765506-sup-209@alvh.no-ip.org |
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| Lists: | pgsql-hackers |
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.
--
Álvaro Herrera <alvherre(at)commandprompt(dot)com>
The PostgreSQL Company - Command Prompt, Inc.
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
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