On Mon, 2007-10-01 at 16:50 -0400, Alvaro Herrera wrote: > > Can CREATE INDEX and ANALYZE be made to run concurrently? > > I don't see why not (except for the fact that both try to update > reltuples and relpages AFAIR, so we would need to be careful about > that).
This seems like the most desirable solution, everything else I've thought of is really just a kluge. We could make ANALYZE use optimistic locking, so it doesn't attempt the catalog lock until later, so ANALYZE would be two internal transactions. It should not overwrite the reltuples values from a concurrent CREATE INDEX either. We should not allow VACUUM to be concurrent with either CREATE INDEX or ANALYZE, but then thats not the problem here anyway. -- Simon Riggs 2ndQuadrant http://www.2ndQuadrant.com ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
