Re: [HACKERS] An idle thought

[Gokulakannan Somasundaram]

> The visibility map itself is already an example of compression. If
> visibility information were randomly distributed among tuples, the
> visibility map would be nearly useless.
>
>
> I believe it is very difficult to make visibility map update friendly
without compromising durability.  But such a functionality is very much
wanted in PG still.