Re: WIP: Page space reservation (pgupgrade)

On Sun, Nov 9, 2008 at 7:55 PM, Decibel! <decibel@decibel.org> wrote:
> On Nov 8, 2008, at 8:35 PM, Jonah H. Harris wrote:
>> That's my question.  Why is this needed at all?
>
> I suspect this is to deal with needing to reserve space in a cluster that
> you're planning on upgrading to a new version that would take more space,
> but I think the implementation is probably too simplistic.

Well, if that's what it is, I think it's a fairly poor design
decision.  When I upgrade Oracle, SQL Server, or MySQL, I don't need
to plan the amount of free space in my blocks a year or more before an
upgrade.  In fact, I don't have to plan it at all... it's completely
handled by the in-place upgrade.

-- 
Jonah H. Harris, Senior DBA
myYearbook.com