Re: First draft of PG 19 release notes

> On May 16, 2026, at 01:27, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
>
> On Fri, May 15, 2026 at 12:31:59PM -0400, Peter Geoghegan wrote:
>> On Tue, Apr 14, 2026 at 9:19 PM Bruce Momjian <bruce(at)momjian(dot)us> wrote:
>>> I have completed the first draft of the PG 19 release notes:
>>>
>>> https://www.postgresql.org/docs/devel/release-19.html
>>
>> I do not think that this item merits mention in the release notes:
>>
>> "Add fake LSN support to hash index AM (Peter Geoghegan)"
>>
>> It offers no user-visible benefit. It's just preparation for index
>> prefetching, which didn't make it into Postgres 19.
>
> Ah, I see your point, and the commit message was clear:
>
> This commit is similar to commit 8a879119, which taught nbtree to
> use fake LSNs to improve its dropPin behavior. However, unlike that
> commit, this is not an independently useful enhancement, since hash
> doesn't implement anything like nbtree's dropPin behavior (not yet).
>
> Item removed.
>
> --
> Bruce Momjian <bruce(at)momjian(dot)us> https://momjian.us
> EDB https://enterprisedb.com
>
> Do not let urgent matters crowd out time for investment in the future.
>
>

Chong Peng, whom I added to CC, reported this release note issue to me, so I’m just forwarding the message:

```
<listitem>
<para>
Add slot synchronization skip information to pg_stat_replication_slots (Shlok Kyal)
<ulink url="&commit_baseurl;76b78721c">&sect;</ulink>
<ulink url="&commit_baseurl;e68b6adad">&sect;</ulink>
<ulink url="&commit_baseurl;5db6a344a">&sect;</ulink>
</para>

<para>
The new columns are slotsync_skip_count, slotsync_last_skip, and slotsync_skip_reason.
</para>
</listitem>
```

The feature description is inaccurate: slotsync_skip_count and slotsync_last_skip belong to pg_stat_replication_slots, while slotsync_skip_reason belongs to pg_replication_slots. Maybe it could be reworded as:
```
Add slot synchronization skip information to pg_stat_replication_slots and pg_replication_slots (Shlok Kyal)
```

Best regards,
--
Chao Li (Evan)
HighGo Software Co., Ltd.
https://www.highgo.com/