Thread
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Re: First draft of PG 19 release notes
Chao Li <li.evan.chao@gmail.com> — 2026-05-26T05:25:15Z
> On May 16, 2026, at 01:27, Bruce Momjian <bruce@momjian.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@momjian.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@momjian.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">§</ulink> <ulink url="&commit_baseurl;e68b6adad">§</ulink> <ulink url="&commit_baseurl;5db6a344a">§</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/