On 13/11/14 14:18, Simon Riggs wrote:
>
> So in summary... the components are
> * Commit LSN order is useful for applying changes - available by
> logical decoding
> * Commit timestamps and nodeid are useful for conflict resolution -
> available from this patch
>
> Both components have been designed in ways that allow multiple
> replication systems to use these facilities.
>
> So, -1 to including commit LSN in the SLRU alongside commit timestamp
> and nodeid.
>
I am of the same opinion, I added the LSN "by popular demand", but I
still personally don't see the value in having it there as it does *not*
enable us to do something that would be impossible otherwise.
-- Petr Jelinek http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training &
Services
