On Tue, Feb 14, 2012 at 10:04:15AM +0200, Heikki Linnakangas wrote: > Perhaps it would be simpler to add the extra information to the commit > records of the transactions that commit after the first transaction is > prepared. In the commit record, you would include a list of prepared > transactions that this transaction conflicted with. During recovery, you > would collect those lists in memory, and use them at the end of recovery > to flag the conflicts in prepared transactions that are still in > prepared state.
Yeah, doing it that way might be a better strategy if we wanted to go that route. I hadn't really considered it because I'm not that familiar with the xlog code (plus, the commit record already contains a variable length field, making it that much more difficult to add another). Dan -- Dan R. K. Ports MIT CSAIL http://drkp.net/ -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers