Re: First draft of PG 17 release notes

On Thu, May 9, 2024 at 10:48 PM Bruce Momjian <bruce(at)momjian(dot)us> wrote:
>
> On Thu, May 9, 2024 at 02:17:12PM +0900, Masahiko Sawada wrote:
> > Hi,
> >
>
> > Also, please consider the following item:
> >
> > - Improve eviction algorithm in ReorderBuffer using max-heap for many
> > subtransactions (5bec1d6bc)
>
> I looked at that item and I don't have a generic "make logical
> replication apply faster" item to merge it into, and many
> subtransactions seemed like enough of an edge-case that I didn't think
> mentioning it make sense. Can you see a good place to add it?

I think that since many subtransactions cases are no longer becoming
edge-cases these days, we needed to improve that and it might be
helpful for users to mention it. How about the following item for
example?

Improve logical decoding performance in cases where there are many
subtransactions.

>
> > Finally, should we mention the following commit in the release note?
> > It's not a user-visible change but added a new regression test module.
> >
> > - Add tests for XID wraparound (e255b646a)
>
> I don't normally add testing infrastructure changes unless they are
> major.

I've seen we had such item, for example in PG14 release note:

Add a test module for the regular expression package (Tom Lane)

But if our policy has already changed, I'm okay with not mentioning
the xid_wraparound test in the PG17 release note.

Regards,

--
Masahiko Sawada
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