Horton

Re: PG 14 release notes, first draft

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Joe Conway <mail@joeconway.com>
Cc: Bruce Momjian <bruce@momjian.us>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2021-05-11T19:51:39Z
Lists: pgsql-hackers 
Joe Conway <mail@joeconway.com> writes:
> On 5/11/21 1:30 PM, Bruce Momjian wrote:
>> It just feels like this change makes the function's behavior less
>> consistent.

> See Tom's commit message here:
> https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=3d0f68dd30612

> In particular:

>    "The variants of these functions that take
>     numeric inputs (OIDs or column numbers) are
>     supposed to return NULL rather than failing
>     on bad input; this rule reduces problems with
>     snapshot skew when queries apply the functions
>     to all rows of a catalog."

Yeah, the null-return-for-bad-numeric-input behavior is important.
Perhaps a case could be made for returning null for bad text
input too, but I don't recall that anybody has asked for that.

A case could also be made that changing the behavior on the text
side would break applications that expect the current behavior.
So I'm disinclined to make a wholesale change there, without more
evidence that it's a good idea.

			regards, tom lane

Commits

  1. doc: add mention of +4GB windows file handling in PG14 relnotes

  2. doc: PG 14 relnotes fixes

  3. doc: PG 14 relnote updates

  4. doc: PG 14 relnotes, adjust pg_{read|write}_all_data entry

  5. Update PG 14 relnotes for vacuum_cost_page_miss

  6. doc: update PG 14 release notes with recent feedback

  7. Update replication statistics after every stream/spill.

  8. Add information of total data processed to replication slot stats.

  9. Use NameData datatype for slotname in stats.

  10. Add back vacuum_cleanup_index_scale_factor parameter.

  11. Don't consider newly inserted tuples in nbtree VACUUM.

  12. pgbench: Improve time logic.

  13. Track total amounts of times spent writing and syncing WAL data to disk.

  14. Allow decoding at prepare time in ReorderBuffer.

  15. Extend the output plugin API to allow decoding of prepared xacts.

  16. Fix nbtree cleanup-only VACUUM stats inaccuracies.

  17. Execute invalidation messages for each XLOG_XACT_INVALIDATIONS message

  18. Fix our Windows stat() emulation to handle file sizes > 4GB.

  19. Trigger autovacuum based on number of INSERTs

  20. Speed up planning when partitions can be pruned at plan time.

  21. Remove support for password_encryption='off' / 'plain'.

  22. Increase work_mem and maintenance_work_mem defaults by 4x