Re: Did we really want to force an initdb in beta2?

Dave Page <dpage@pgadmin.org> writes:
> On Fri, Jun 4, 2010 at 2:49 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> Right, because the catalog contents didn't change. �Seems to me you'd
>> better teach the installers to look at PG_CONTROL_VERSION too.

> Hmm, is there anything else that might need to be checked?

Offhand I can think of three internal version-like numbers:

CATALOG_VERSION_NO --- bump if initial system catalog contents would be
inconsistent with backend code

PG_CONTROL_VERSION --- bump when contents of pg_control change

XLOG_PAGE_MAGIC --- bump on incompatible change in WAL contents
        regards, tom lane