Re: age(xid) on hot standby

Excerpts from Tom Lane's message of lun ene 16 12:27:03 -0300 2012:
> 
> Alvaro Herrera <alvherre@commandprompt.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@commandprompt.com>
The PostgreSQL Company - Command Prompt, Inc.
PostgreSQL Replication, Consulting, Custom Development, 24x7 support