Simon Riggs <si...@2ndquadrant.com> writes: > On Mon, 2009-12-14 at 13:48 -0500, Tom Lane wrote: >> Simon Riggs <si...@2ndquadrant.com> writes: >>> * Disallow clustering system relations. This will definitely NOT work >>> * for shared relations (we have no way to update pg_class rows in other >>> * databases), nor for nailed-in-cache relations (the relfilenode values >>> * for those are hardwired, see relcache.c). It might work for other >>> * system relations, but I ain't gonna risk it. >> >>> I would presume we would not want to relax the restriction on CLUSTER >>> working on these tables, even if new VACUUM FULL does. >> >> Why not? If we solve the problem of allowing these relations to change >> relfilenodes, then CLUSTER would work just fine on them. Whether it's >> particularly useful is not ours to decide I think.
> I think you are probably right, but my wish to prove Schrodinger's Bug > does not exist is not high enough for me personally to open that box > this side of 8.6, especially when the previous code author saw it as a > risk worth documenting. You're talking to the "previous code author" ... or at least I'm pretty sure that comment is mine. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers