| From: | Julien Rouhaud <rjuju123(at)gmail(dot)com> |
|---|---|
| To: | Bharath Rupireddy <bharath(dot)rupireddyforpostgres(at)gmail(dot)com> |
| Cc: | PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Can there ever be out of sequence WAL files? |
| Date: | 2022-01-12 02:18:11 |
| Message-ID: | 20220112021811.5sthbk3rx4m5egvt@jrouhaud |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Wed, Jan 12, 2022 at 07:19:48AM +0530, Bharath Rupireddy wrote:
> >
> > Can the postgres server ever have/generate out of sequence WAL files?
> > For instance, 000000010000020C000000A2, 000000010000020C000000A3,
> > 000000010000020C000000A5 and so on, missing 000000010000020C000000A4.
> > Manual/Accidental deletion of the WAL files can happes, but are there
> > any other extreme situations (like recycling, removing old WAL files
> > etc.) caused by the postgres server leading to missing WAL files?
By definition there shouldn't be such situation, as it would otherwise be a
(critical) bug.
> > What happens when postgres server finds missing WAL file during
> > crash/standby recovery?
The recovery should fail.
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Justin Pryzby | 2022-01-12 02:20:27 | Re: do only critical work during single-user vacuum? |
| Previous Message | Peter Geoghegan | 2022-01-12 01:56:35 | Re: do only critical work during single-user vacuum? |