| From: | Peter Geoghegan <pg(at)bowt(dot)ie> |
|---|---|
| To: | pgsql-committers(at)lists(dot)postgresql(dot)org |
| Subject: | pgsql: Avoid special XID snapshotConflictHorizon values. |
| Date: | 2023-01-02 18:17:07 |
| Message-ID: | E1pCPMw-001i5A-Oa@gemulon.postgresql.org |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-committers |
Avoid special XID snapshotConflictHorizon values.
Don't allow VACUUM to WAL-log the value FrozenTransactionId as the
snapshotConflictHorizon of freezing or visibility map related WAL
records.
The only special XID value that's an allowable snapshotConflictHorizon
is InvalidTransactionId, which is interpreted as "record definitely
doesn't require a recovery conflict".
Author: Peter Geoghegan <pg(at)bowt(dot)ie>
Discussion: https://postgr.es/m/CAH2-WznuNGSzF8v6OsgjaC5aYsb3cZ6HW6MLm30X0d65cmSH6A@mail.gmail.com
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/6daeeb1f9196e5d59aa7d5c9ef7ed67b3f3ac4b5
Modified Files
--------------
src/backend/access/heap/vacuumlazy.c | 8 +++++---
src/backend/storage/ipc/standby.c | 1 +
2 files changed, 6 insertions(+), 3 deletions(-)
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Peter Geoghegan | 2023-01-02 18:18:43 | pgsql: Adjust VACUUM hastup LP_REDIRECT comments. |
| Previous Message | Tom Lane | 2023-01-02 18:02:41 | pgsql: Add bt_multi_page_stats() function to contrib/pageinspect. |