Re: Core team statement on replication in PostgreSQL

Csaba Nagy wrote:
> On Wed, 2008-06-04 at 11:13 +0300, Heikki Linnakangas wrote:
>> Hmm, WAL version compatibility is an interesting question. Most minor 
>> releases hasn't changed the WAL format, and it would be nice to allow 
>> running different minor versions in the master and slave in those cases. 
>> But it's certainly not unheard of to change the WAL format. Perhaps we 
>> should introduce a WAL version number, similar to catalog version?
> 
> Would that also cover possible differences in page size, 32bit OS vs.
> 64bit OS, different timestamp flavour, etc. issues ? AFAIR, all these
> things can have an influence on how the data is written and possibly
> make the WAL incompatible with other postgres instances, even if the
> exact same version...

These are already covered by the information in pg_control.

--   Heikki Linnakangas  EnterpriseDB   http://www.enterprisedb.com