Re: Add pg_stat_recovery system view

Xuneng Zhou <xunengzhou@gmail.com>

From: Xuneng Zhou <xunengzhou@gmail.com>
To: Michael Paquier <michael@paquier.xyz>
Cc: pgsql-hackers <pgsql-hackers@lists.postgresql.org>
Date: 2026-03-06T06:06:01Z
Lists: pgsql-hackers
Hi,

On Fri, Mar 6, 2026 at 12:00 PM Michael Paquier <michael@paquier.xyz> wrote:
>
> On Thu, Mar 05, 2026 at 09:01:35PM +0800, Xuneng Zhou wrote:
> > Here is the updated patch set. Please take a look.
>
> Thanks.  It was mostly fine, still:
> - The extra mention of ROLE_PG_READ_ALL_STATS was not necessary.  We
> already have one at the top of the section.
> - After sleeping on it, I have decided to keep recoveryLastXTime,
> partially because we have a system function to retrieve it already.
> - There was a refactoring piece possible when we switch a
> RecoveryPauseState to a non-translatable string, which I have applied
> separately

It looks cleaner.

> - Added one test with pg_stat_recovery checked on a standby.
> --
> Michael

Thanks for improving and pushing!

-- 
Best,
Xuneng



Commits

  1. Fix order of columns in pg_stat_recovery

  2. Add system view pg_stat_recovery

  3. Refactor code retrieving string for RecoveryPauseState

  4. Move definition of XLogRecoveryCtlData to xlogrecovery.h