On Tue, May 10, 2011 at 12:57 PM, Simon Riggs <simon@2ndquadrant.com> wrote:
> Hmmm, do we really need to WAL log freezing?
>
> Can we break down freezing into a 2 stage process, so that we can have
> first stage as a lossy operation and a second stage that is WAL
> logged?
That might solve the relfrozenxid problem - set the bits in the heap,
sync the heap, then update relfrozenxid once the heap is guaranteed
safely on disk - but it again seems problematic for Hot Standby.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
