On Thu, Mar 31, 2011 at 10:59 PM, Bruce Momjian <bruce@momjian.us> wrote:
> OK, just keep going below 100:
>
> 105 -> 5
> 104 -> 4
> 103 -> 3
> 102 -> max_xid
> 101 -> max_xid - 1
> 100 -> max_xid - 2
> 99 -> max_id
> 98 -> max_id -1
Yeah, I think this is what the code is doing.
>
> Wouldn't you rather:
>
> 105 -> 5
> 104 -> 4
> 103 -> 3
> 102 -> 3
> 101 -> 3
> 100 -> 3
> 99 -> max_id
> 98 -> max_id -1
>
I think I would expect
> 105 -> 5
> 104 -> 4
> 103 -> 3
> 102 -> max_id
> 101 -> max_id-1
> 100 -> max_id-2
> 99 -> max_id-3
But it doesn't really matter either way, does it? We don't even allow
setting vacuum_max_freeze_age to 2^31-1 or any value that would be
close to triggering a problem here.
--
greg