Re: PG 13 release notes, first draft

On Tue, May 5, 2020 at 8:46 AM Bruce Momjian <bruce(at)momjian(dot)us> wrote:
>
> I have committed the first draft of the PG 13 release notes. You can
> see them here:
>
> https://momjian.us/pgsql_docs/release-13.html
>

Thanks for the work. I was today going through the release notes and
was wondering whether we should consider adding information about some
other work done for PG13.
1. We have allowed an (auto)vacuum to display additional information
about heap or index in case of an error in commit b61d161c14 [1].
Now, in general, it might not be worth saying much about error
information but I think this one could help users in case they have
some corruption. For example, if one of the indexes on a relation has
some corrupted data (due to bad hardware or some bug), it will let the
user know the index information, and the user can take appropriate
action like either Reindex or maybe drop and recreate the index to
overcome the problem.
2. In the "Source Code" section, we can add information about
infrastructure enhancement for parallelism. Basically, "Allow
relation extension and page lock to conflict among parallel-group
members" [2][3]. This will allow improving the parallelism further in
many cases like (a) we can allow multiple workers to operate on a heap
and index in a parallel vacuum, (b) we can allow parallel Inserts,
etc.

[1] - https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=b61d161c146328ae6ba9ed937862d66e5c8b035a
[2] - https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=85f6b49c2c53fb1e08d918ec9305faac13cf7ad6
[3] - https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=3ba59ccc896e8877e2fbfb8d4f148904cad5f9b0

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