On Mon, 10 May 2021 at 08:03, Bruce Momjian <bruce@momjian.us> wrote:
>
> I have committed the first draft of the PG 14 release notes. You can
> see the most current build of them here:
> https://momjian.us/pgsql_docs/release-14.html
>
> I need clarification on many items, and the document still needs its
> items properly ordered, and markup added. I also expect a lot of
> feedback.
I noticed that the improvement in bloat control in the HeapAM that I
know of (3c3b8a4b, 0ff8bbde) weren't documented here. Although each
can be considered minor, they together can decrease the bloating
behaviour of certain workloads significantly (and limit the total
damage), and in my opinion this should be mentioned.
3c3b8a4b: Returns space claimed for the line pointer array back to the
page's empty space, so that it can also be used for tuple data.
0ff8bbde: Allows large tuples to be inserted on pages which have only
a small amount of data, regardless of fillfactor.
Together they should be able to help significantly in both bloat
prevention and bloat reduction.
> I plan to work on completing this document this coming week in
> preparation for beta next week.
Thanks!
With regards,
Matthias van de Meent