On Tue, Mar 21, 2017 at 04:43:58PM -0300, Alvaro Herrera wrote:
> Bruce Momjian wrote:
>
> > I don't think it makes sense to try and save bits and add complexity
> > when we have no idea if we will ever use them,
>
> If we find ourselves in dire need of additional bits, there is a known
> mechanism to get back 2 bits from old-style VACUUM FULL. I assume that
> the reason nobody has bothered to write the code for that is that
> there's no *that* much interest.
We have no way of tracking if users still have pages that used the bits
via pg_upgrade before they were removed.
-- Bruce Momjian <bruce@momjian.us> http://momjian.us EnterpriseDB
http://enterprisedb.com
+ As you are, so once was I. As I am, so you will be. +
+ Ancient Roman grave inscription +
