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Subject: Re: Detailed release notes
From: Daniel Gustafsson <daniel@yesql.se>
In-Reply-To: <CAB-JLwZnhaAcD2g_qxSqP-zcfek8NyOU48qqneeYcjwRODr6YA@mail.gmail.com>
Date: Fri, 26 Jul 2024 14:45:20 +0200
Cc: PostgreSQL Hackers <pgsql-hackers@postgresql.org>
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References: <CAB-JLwZnhaAcD2g_qxSqP-zcfek8NyOU48qqneeYcjwRODr6YA@mail.gmail.com>
To: Marcos Pegoraro <marcos@f10.com.br>
Archived-At: <https://www.postgresql.org/message-id/F8C2CC64-5265-4668-901D-B4A20420EC89%40yesql.se>
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> On 26 Jul 2024, at 14:30, Marcos Pegoraro <marcos@f10.com.br> wrote:
>=20
> I'm now using version 14 and planning to update to 17 as soon as it =
comes available. Then looking carefully to release notes to see exactly =
what I'll get when updated I see lots of unexplained features. Just =
because release notes does not explain exactly what that change does. =
And I don't have a way to get what code or messages generated that =
feature.

There is a way, but it's not exactly visible from reading the release =
notes.

>     =E2=80=A2 Allow query nodes to be run in parallel in more cases =
(Tom Lane)
> Cool this feature, but when and what kind of query will use this ?

Reading the source of the release notes will show a comment which links =
to the
commit.  The source can be seen here:

    =
https://github.com/postgres/postgres/blob/REL_17_STABLE/doc/src/sgml/relea=
se-17.sgml

..and the comment for this item is:

<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2023-07-14 [e08d74ca1] Allow plan nodes with initPlans to be considered =
paralle
-->

      <listitem>
       <para>
       Allow query nodes to be run in parallel in more cases (Tom Lane)
       </para>
      </listitem>

This comment tells us the relevant commit is e08d74ca1, which can be =
found here:

    https://github.com/postgres/postgres/commit/e08d74ca1

This in turn leads to the mailinglist discussion for this specific =
feature:

    =
https://www.postgresql.org/message-id/1129530.1681317832@sss.pgh.pa.us

--
Daniel Gustafsson