Horton

Re: PG 15 (and to a smaller degree 14) regression due to ExprEvalStep size

Andres Freund <andres@anarazel.de>

View thread View on postgr.es
From: Andres Freund <andres@anarazel.de>
To: Michael Paquier <michael@paquier.xyz>
Cc: Andrew Dunstan <andrew@dunslane.net>, Tom Lane <tgl@sss.pgh.pa.us>, David Rowley <dgrowleyml@gmail.com>, Peter Geoghegan <pg@bowt.ie>, PostgreSQL-development <pgsql-hackers@postgresql.org>, Nikita Glukhov <n.gluhov@postgrespro.ru>
Date: 2022-07-05T19:08:54Z
Lists: pgsql-hackers 
Hi,

On 2022-06-23 18:51:45 -0700, Andres Freund wrote:
> > Waiting for beta3 would a better move at this stage.  Is somebody confident
> > enough in the patches proposed?
> 
> 0001 is the one that needs to most careful analysis, I think. 0002 I'd be fine
> with pushing after reviewing it again. For 0003 David's approach might be
> better or worse, it doesn't matter much I think. 0004 is ok I think, perhaps
> with the exception of quibbling over some naming decisions?

I don't quite feel comfortable with 0001, without review by others. So my
current plan is to drop it and use get_timeout_active() "manually". We can
improve this in HEAD to remove the redundancy.

I've pushed what was 0004, will push what was 0002 with the above change in a
short while unless somebody protests PDQ. Then will look at David's edition of
my 0003.

Greetings,

Andres Freund

Commits

  1. JSON_TABLE: Add support for NESTED paths and columns

  2. Add basic JSON_TABLE() functionality

  3. Add SQL/JSON query functions

  4. Add soft error handling to some expression nodes

  5. Adjust populate_record_field() to handle errors softly

  6. Refactor code used by jsonpath executor to fetch variables

  7. Add more SQL/JSON constructor functions

  8. SQL/JSON: support the IS JSON predicate

  9. SQL/JSON: add standard JSON constructor functions

  10. Add static assertion ensuring sizeof(ExprEvalStep) <= 64 bytes

  11. Remove size increase in ExprEvalStep caused by hashed saops

  12. pgstat: reduce timer overhead by leaving timer running.

  13. expression eval: Fix EEOP_JSON_CONSTRUCTOR and EEOP_JSONEXPR size.

  14. SQL/JSON query functions

  15. Speedup ScalarArrayOpExpr evaluation