Re: Transaction-controlled robustness for replication

On Tue, 2008-08-12 at 15:40 -0400, Tom Lane wrote:
> Simon Riggs <simon@2ndquadrant.com> writes:
> > On Tue, 2008-08-12 at 11:52 -0400, Bruce Momjian wrote:
> >> What is the attraction of logical application of the WAL logs? 
> >> Transmitting to a server with different architecture?
> 
> > Yes,
> 
> > * different release
> > * different encoding
> > * different CPU architecture
> > * (with the correct transform) a different DBMS
> 
> The notion that the WAL logs will ever be portable across such
> differences is so ... so ... well, it's barely worth laughing at.

I expect to begin discussion of how that might be achieved in a few
days. I understand the starting place for your thinking, but am not
deterred because I see some solutions. I feel certain you will point out
some difficulties, but I think it is worth doing. Please lets start
those discussions from a neutral point. If you find a real showstopper,
then so be it. Sorry for the delay.

Bruce was asking about why I might want that. If we can at least agree
there is a use case then it helps.

-- Simon Riggs           www.2ndQuadrant.comPostgreSQL Training, Services and Support