On Sat, Aug 14, 2010 at 08:40:24AM +0200, Boszormenyi Zoltan wrote: > Andres Freund írta: > > On Fri, Aug 13, 2010 at 09:36:00PM +0200, Boszormenyi Zoltan wrote: > > > >> Tom Lane írta: > >> > >>> Boszormenyi Zoltan <z...@cybertec.at> writes: > >>> > >>> > >>>> attached is a WIP patch that will eventually implement > >>>> partial replication, with the following syntax: > >>>> > >>> This fundamentally cannot work, as it relies on system catalogs to be > >>> valid during recovery. > >>> > >> Just like Hot Standby, no? What is the difference here? > >> Sorry for being ignorant. > >> > > In HS you can only connect after youve found a restartpoint - only > > after that you know that you have reached a consistent point for the > > system. > > > And in this patch, the startup process only tries to connect > after signalling the postmaster that a consistent state is reached. > And the connection has a reasonable timeout built in. I don't think you currently can guarantee you allways have enough local WAL to even reach a consistent point. Which is not a problem of your patch, dont get me wrong...
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