Horton

Re: First draft of PG 17 release notes

David Rowley <dgrowleyml@gmail.com>

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From: David Rowley <dgrowleyml@gmail.com>
To: Bruce Momjian <bruce@momjian.us>
Cc: Melanie Plageman <melanieplageman@gmail.com>, Alvaro Herrera <alvherre@alvh.no-ip.org>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2024-05-19T03:53:38Z
Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Revert support for ALTER TABLE ... MERGE/SPLIT PARTITION(S) commands

  2. When creating materialized views, use REFRESH to load data.

  3. Revert temporal primary keys and foreign keys

  4. Avoid needless large memcpys in libpq socket writing

  5. Enhance nbtree ScalarArrayOp execution.

  6. Introduce a non-recursive JSON parser

  7. Combine freezing and pruning steps in VACUUM

  8. Allow SIGINT to cancel psql database reconnections.

  9. Provide API for streaming relation data.

  10. Add hash support functions and hash opclass for contrib/ltree.

  11. Pull up ANY-SUBLINK with the necessary lateral support.

  12. Read WAL directly from WAL buffers.

  13. Introduce the dynamic shared memory registry.

  14. Add macros for looping through a List without a ListCell.

  15. Support +/- infinity in the interval data type.

  16. Extend ALTER OPERATOR to allow setting more optimization attributes.

  17. Consider cheap startup paths in add_paths_to_append_rel

On Sun, 19 May 2024 at 02:40, Bruce Momjian <bruce@momjian.us> wrote:
>
> On Thu, May 16, 2024 at 03:35:17PM +1200, David Rowley wrote:
> > "Additionally, vacuum no longer silently imposes a 1GB tuple reference
> > limit even when maintenance_work_mem or autovacuum_work_mem are set to
> > higher values"

> Slightly adjusted wording patch attached and applied.

Thanks for adjusting.

It's a minor detail, but I'll mention it because you went to the
effort to adjust it away from what I'd written...

I didn't make a random choice to use "or" between the two GUCs.
Changing it to "and", IMO, isn't an improvement.  Using "and" implies
that the silent limited was only imposed when both of these GUCs were
set >= 1GB. That's not true. For the case we're talking about here, if
autovacuum_work_mem is set to anything apart from -1 then the value of
maintenance_work_mem does not matter.

David