Re: [DOCS] Autovacuum and XID wraparound

Alvaro Herrera wrote:
> In any case the change is a very small patch, which I attach but I
> haven't tested.  This only works if the new rewriteheap stuff actually
> changes Xids to follow OldestXmin, i.e. all tuples that have older
> Xmin/Xmax are frozen (or marked with the current Xid).  Heikki, can you
> confirm that this is the case?

No, CLUSTER doesn't freeze tuples. It could do that easily, it didn't
occur to me when I wrote it. It would make it harder to debug, though,
should we have any problems with it in the future.

--
   Heikki Linnakangas
   EnterpriseDB   http://www.enterprisedb.com