On Wed, Jul 17, 2019 at 9:27 AM Thomas Munro <thomas.mu...@gmail.com> wrote: > > On Wed, Jul 17, 2019 at 3:44 PM Dilip Kumar <dilipbal...@gmail.com> wrote: > > Right, actually I got that point. But, I was thinking that we are > > wasting one logno from undo log addressing space no?. Instead, if we > > can keep it attached to the slot and somehow manage to add to the free > > list then the same logno can be used by someone else? > > We can never reuse log numbers. UndoRecPtr values containing that log > number could exist in permanent storage anywhere (zheap, zedstore etc) > and must appear to be discarded forever if anyone asks.
Yeah right. I knew that we can not reuse UndoRecPtr but forget to think that if we reuse logno then it is same as reusing UndoRecPtr. Sorry for the noise. -- Regards, Dilip Kumar EnterpriseDB: http://www.enterprisedb.com
