Horton

Re: Inval reliability, especially for inplace updates

Noah Misch <noah@leadboat.com>

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From: Noah Misch <noah@leadboat.com>
To: pgsql-hackers@postgresql.org
Date: 2024-06-16T22:12:05Z
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. Update .abi-compliance-history for PrepareToInvalidateCacheTuple().

  2. Assert lack of hazardous buffer locks before possible catalog read.

  3. For inplace update, send nontransactional invalidations.

  4. Update .abi-compliance-history for CacheInvalidateHeapTupleInplace().

  5. Revisit cosmetics of "For inplace update, send nontransactional invalidations."

  6. Correct comments of "Fix data loss at inplace update after heap_update()".

  7. Move I/O before the index_update_stats() buffer lock region.

  8. Revert "For inplace update, send nontransactional invalidations."

  9. Revert "WAL-log inplace update before revealing it to other sessions."

  10. Fix inplace update buffer self-deadlock.

  11. Remove duplicate words in comments

  12. At end of recovery, reset all sinval-managed caches.

  13. Fix data loss at inplace update after heap_update().

  14. Remove comment about xl_heap_inplace "AT END OF STRUCT".

  15. Reduce memory consumption for pending invalidation messages.

  16. Add support for streaming to built-in logical replication.

  17. WAL Log invalidations at command end with wal_level=logical.

  18. Introduce logical decoding.

  19. Rename and document some invalidation routines to make it clearer that

On Sat, Jun 15, 2024 at 03:37:18PM -0700, Noah Misch wrote:
> I'm attaching the implementation.

I'm withdrawing inplace150-inval-durability-atcommit-v1.patch, having found
two major problems so far:

1. It sends transactional invalidation messages before
   ProcArrayEndTransaction(), so other backends can read stale data.

2. It didn't make the equivalent changes for COMMIT PREPARED.