Re: WIP: Avoid creation of the free space map for small tables

On Thu, Jan 31, 2019 at 6:37 AM Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
>
> On Wed, Jan 30, 2019 at 8:11 PM John Naylor <john(dot)naylor(at)2ndquadrant(dot)com> wrote:
> >
> > That's probably a good idea to limit risk. I just very basic tests
> > now, and vacuum before every relation size check to make sure any FSM
> > extension (whether desired or not) is invoked. Also, in my last patch
> > I forgot to implement explicit checks of the block number instead of
> > assuming how many rows will fit on a page. I've used a plpgsql code
> > block to do this.
> >
>
> -- Extend table with enough blocks to exceed the FSM threshold
> -- FSM is created and extended to 3 blocks
>
> The second comment line seems redundant to me, so I have removed that
> and integrated it in the main patch.

FYI, the second comment is still present in v20.

--
John Naylor https://www.2ndQuadrant.com/
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