Horton

Re: Table AM Interface Enhancements

Jeff Davis <pgsql@j-davis.com>

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From: Jeff Davis <pgsql@j-davis.com>
To: Alexander Korotkov <aekorotkov@gmail.com>, Robert Haas <robertmhaas@gmail.com>
Cc: Andres Freund <andres@anarazel.de>, Pavel Borisov <pashkin.elfe@gmail.com>, Japin Li <japinli@hotmail.com>, Mark Dilger <mark.dilger@enterprisedb.com>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>, Michael Paquier <michael@paquier.xyz>, Heikki Linnakangas <hlinnaka@iki.fi>
Date: 2024-04-11T17:11:47Z
Lists: pgsql-hackers 
On Wed, 2024-04-10 at 15:19 +0300, Alexander Korotkov wrote:
> 1) 9bd99f4c26 comprises the reworked patch after working with notes
> from Jeff Davis.  I agree it would be better to wait for him to
> express explicit agreement.  Before reverting this, I would prefer to
> hear his opinion.

On this particular feature, I had tried it in the past myself, and
there were a number of minor frustrations and I left it unfinished. I
quickly recognized that commit c95c25f9af was too simple to work.

Commit 9bd99f4c26 looked substantially better, but I was surprised to
see it committed so soon after the redesign. I thought a revert was
likely outcome, but I put it on my list of things to review more deeply
in the next couple weeks so I could give productive feedback.

It would benefit from more discussion in v18, and I apologize for not
getting involved earlier when the patch still could have made it into
v17.

Regards,
	Jeff Davis

Commits

  1. Remove extra comment at TableAmRoutine.scan_analyze_next_block

  2. revert: Generalize relation analyze in table AM interface

  3. Revert: Allow table AM to store complex data structures in rd_amcache

  4. Revert: Allow table AM tuple_insert() method to return the different slot

  5. Revert: Allow locking updated tuples in tuple_update() and tuple_delete()

  6. Revert: Let table AM insertion methods control index insertion

  7. Revert: Custom reloptions for table AM

  8. Provide a way block-level table AMs could re-use acquire_sample_rows()

  9. Custom reloptions for table AM

  10. Use streaming I/O in ANALYZE.

  11. Revert "Custom reloptions for table AM"

  12. Let table AM insertion methods control index insertion

  13. Generalize relation analyze in table AM interface

  14. Improve error message for tts_(virtual|minimal)_is_current_xact_tuple

  15. Add comments on some MinimalTupleSlots methods usage

  16. Add TupleTableSlotOps.is_current_xact_tuple() method

  17. Allow table AM tuple_insert() method to return the different slot

  18. Allow table AM to store complex data structures in rd_amcache