On 2014-03-03 12:08:26 -0500, Stephen Frost wrote: > * Robert Haas (robertmh...@gmail.com) wrote: > > On Mon, Mar 3, 2014 at 11:28 AM, Fabrízio de Royes Mello > > <fabriziome...@gmail.com> wrote: > > > Is the TODO item "make an unlogged table logged" [1] a good GSoC project? > > > > I'm pretty sure we found some problems in that design that we couldn't > > figure out how to solve. I don't have a pointer to the relevant > > -hackers discussion off-hand, but I think there was one. > > ISTR the discussion going something along the lines of "we'd have to WAL > log the entire table to do that, and if we have to do that, what's the > point?".
I don't see that as a particularly problematic problem. The primary reason to want to convert a unlogged to a logged table probably is that it's easier to do so than to recreate the table + dependencies. Also the overhead of logging full pages will be noticeably smaller than the overhead of adding all rows individually, even if using heap_multi_insert(). Greetings, Andres Freund -- Andres Freund http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
