Fix BRIN 32-bit counter wrap issue with huge tables
David Rowley <drowley@postgresql.org>
Fix BRIN 32-bit counter wrap issue with huge tables A BlockNumber (32-bit) might not be large enough to add bo_pagesPerRange to when the table contains close to 2^32 pages. At worst, this could result in a cancellable infinite loop during the BRIN index scan with power-of-2 pagesPerRange, and slow (inefficient) BRIN index scans and scanning of unneeded heap blocks for non power-of-2 pagesPerRange. Backpatch to all supported versions. Author: sunil s <sunilfeb26@gmail.com> Reviewed-by: David Rowley <dgrowleyml@gmail.com> Reviewed-by: Michael Paquier <michael@paquier.xyz> Discussion: https://postgr.es/m/CAOG6S4-tGksTQhVzJM19NzLYAHusXsK2HmADPZzGQcfZABsvpA@mail.gmail.com Backpatch-through: 13
Files
| Path | Change | +/− |
|---|---|---|
| src/backend/access/brin/brin.c | modified | +5 −5 |
Discussion
- BRIN: Prevent the heapblk overflow during index summarization on very large tables resulting in an infinite loop 7 messages · 2025-10-19 → 2025-10-21