On Wed, 2010-01-20 at 14:13 +0100, Andres Freund wrote: > I do understand it correctly that in CancelVirtualTransaction > LW_SHARED is > taken only so that another transaction can finish during that time?
We're canceling one specific vxid, so no need to block other snapshots from being taken. Read only queries don't take ProcArrayLock when they complete and the Startup process is the only process to record xact completion during recovery. -- Simon Riggs www.2ndQuadrant.com -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
