| From: | ls7777 <ls7777(at)yandex(dot)ru> |
|---|---|
| To: | "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Patch for migration of the pg_commit_ts directory |
| Date: | 2025-04-03 18:27:32 |
| Message-ID: | 182311743703924@mail.yandex.ru |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Good afternoon!
During pg_upgrade migration, the pg_commit_ts directory is not copied when track_commit_timestamp = on is set. There is a patch in the attachment that fixes this.
Contents & Purpose
==================
The patch copies the pg_commit_ts directory of the old cluster and updates the Latest checkpoints oldestCommitTsXid and Latest checkpoint's newestCommitTsXid for the new cluster. If required.
Initial Run
===========
The patch can be applied on the master branch.
I don't understand what tests are needed for such a patch. The patch is very simple.
Performance
===========
The pg_upgrade operation time increases by the time the pg_commit_ts catalog is copied.
| Attachment | Content-Type | Size |
|---|---|---|
| unknown_filename | text/html | 888 bytes |
| v1-0001-Migration-of-the-pg_commit_ts-directory.patch | text/x-diff | 3.4 KB |
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Konstantin Knizhnik | 2025-04-03 18:32:35 | Re: New criteria for autovacuum |
| Previous Message | Masahiko Sawada | 2025-04-03 18:23:49 | Re: pg_recvlogical cannot create slots with failover=true |