2011/10/26 Robert Haas <robertmh...@gmail.com>: > 2011/10/26 Shigeru Hanada <shigeru.han...@gmail.com>: >> (2011/10/25 19:15), Magnus Hagander wrote: >>> 2011/10/25 Shigeru Hanada<shigeru.han...@gmail.com>: >>>> I'd like to propose pgsql_fdw, FDW for external PostgreSQL server, as a >>>> contrib module. I think that this module would be the basis of further >>>> SQL/MED development for core, e.g. join-push-down and ANALYZE support. >>> >>> I have not looked at the code itself, but I wonder if we shouldn't >>> consider making this a part of core-proper, not just a contrib module. >>> The fact that it isn't *already* available in core surprises a lot of >>> people... >> >> Do you mean that pgsql_fdw should be a built-in extension like plpgsql >> so that it's available just after initdb? It would be accomplished with >> some more changes: >> >> * Move pgsql_fdw into core, say src/backend/foreign/libpgsql_fdw, and >> install dynamically loadable module during "make install" for core. The >> pgsql_fdw_handler function can't be included into core binary because we >> must avoid liking libpq with server binary directly. This method is >> also used for libwalreceiver of replication module. >> * Create pgsql_fdw extension during initdb invocation, like plpgsql. >> >> These are not trivial, but not difficult so much. However, I think >> contrib would be the appropriate place for pgsql_fdw because it's >> (relatively) special feature. > > I agree. pgsql_fdw will be a nice feature, but there's no reason to > think that everyone will want it installed by default, and there are > some security reasons to think that they might not. On the flip side, > pushing it out of contrib and onto pgfoundry or whatever makes it > unnecessarily difficult to install, and not as many people will > benefit from it. So contrib seems exactly right to me. > I also agree. The pgsql_fdw will be worthful to locate in the main tree as a contrib module. It will give us clear opportunity to test new features of FDW using RDBMS characteristics; such as join-push-down. However, it should be a separated discussion whether it shall be installed by the default.
Thanks, -- KaiGai Kohei <kai...@kaigai.gr.jp> -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers