On Tue, Mar 13, 2012 at 5:42 PM, Bruce Momjian <br...@momjian.us> wrote: > What is the target=10 duration? I think 10 is as low as we can > acceptably recommend. Should we recommend they run vacuumdb twice, once > with default_statistics_target = 4, and another with the default?
I'm not sure why we're so glibly rejecting Dan's original proposal. Sure, adjusting pg_upgrade when we whack around pg_statistic is work, but who ever said that a workable in-place upgrade facility would be maintenance-free? We're operating under a number of restrictions imposed by the need to be pg_upgrade-compatible, and this doesn't strike me as a particularly severe one by comparison -- we can always arrange to NOT migrate statistics between incompatible versions; that doesn't mean that we shouldn't migrate them when they ARE compatible. Also, unlike the alternatives thus far proposed, Dan's idea actually fixes the problem. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
