On Sat, 2009-01-24 at 11:20 +0000, Simon Riggs wrote: > On Sat, 2009-01-24 at 17:24 +1300, Mark Kirkwood wrote: > > > > version 9g - please use this for testing now > > > I'm doing some test runs with this now. I notice an old flatfiles > > related bug has reappeared: > > I'm seeing an off-by-one error on xmax, in some cases. That then causes > the flat file update to not pick up correct info, even though it > executed in other ways as intended. If you run two create databases and > then test only the first, it appears to have worked as intended. > > These bugs are result of recent refactoring and it will take a few days > to shake some of them out. We've had more than 20 already so we're > beating them back, but we're not done yet.
I was at a loss to explain how this could have slipped through our tests. It appears that the error was corrected following each checkpoint as a result of ProcArrayUpdateRunningXacts(). Our tests were performed after a short delay, which typically would be greater than the deliberately short setting of checkpoint_timeout/archive_timeout and so by the time we looked the error was gone and masked the problem. We're setting checkpoint_timeout to 30 mins now to avoid the delay... -- Simon Riggs www.2ndQuadrant.com PostgreSQL Training, Services and Support -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
