Re: rmgr hooks and contrib/rmgr_hook

Simon Riggs wrote:
> On Mon, 2008-09-15 at 08:52 -0400, Tom Lane wrote:
>> I've never heard of anyone building a non-core index AM at all; much
>> less trying to use it in a production context.  Given the obvious
>> potential for version-mismatch-type problems, it's hard to believe
>> that anyone ever would try.
> 
> The lack of a chicken is not an argument against the use case for an
> egg.
> 
> But in any case, Bizgres was exactly this case, so they already did. We
> just forced the authors to produce a code fork to do it, confusing
> people rather than attracting people to Postgres.

Are you referring to the bitmap index patch? IIRC, there was some 
non-trivial changes to indexam API in there, as well as issues with 
VACUUM. If anything, that patch supports the assumption that anything 
that needs WAL-logging is working at such a low-level that it needs to 
be in core anyway.

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