Re: pgsql: Revert "Avoid the creation of the free space map for small heap

On Tue, May 7, 2019 at 9:44 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:
>
> Amit Kapila <akapila@postgresql.org> writes:
> > Revert "Avoid the creation of the free space map for small heap relations".
>
> Shouldn't there be a catversion bump in this?  I doubt that an existing
> v12 DB (with some missing FSM files) is going to work with the updated
> backend.
>

Won't the next vacuum run will create the FSM?  There is some
performance loss, but shouldn't be big.

>  Also, will pg_upgrade work across that boundary?
>

I haven't tried it.  What is your worry?


-- 
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com