Re: collect_corrupt_items_vacuum.patch

Alexander Korotkov <aekorotkov@gmail.com>

From: Alexander Korotkov <aekorotkov@gmail.com>
To: Heikki Linnakangas <hlinnaka@iki.fi>
Cc: Noah Misch <noah@leadboat.com>, Dmitry Koval <d.koval@postgrespro.ru>, pgsql-hackers@lists.postgresql.org
Date: 2024-08-13T19:15:52Z
Lists: pgsql-hackers
On Tue, Aug 13, 2024 at 9:39 PM Heikki Linnakangas <hlinnaka@iki.fi> wrote:
>
> This causes an assertion failure when executed in a hot standby server:
>
>   select * from pg_check_visible('pg_database');
>
> TRAP: failed Assert("!RecoveryInProgress()"), File:
> "../src/backend/storage/ipc/procarray.c", Line: 2710, PID: 1142572
>
> GetStrictOldestNonRemovableTransactionId does this:
>
> >       if (rel == NULL || rel->rd_rel->relisshared || RecoveryInProgress())
> >       {
> >               /* Shared relation: take into account all running xids */
> >               runningTransactions = GetRunningTransactionData();
> >               LWLockRelease(ProcArrayLock);
> >               LWLockRelease(XidGenLock);
> >               return runningTransactions->oldestRunningXid;
> >       }
>
> And GetRunningTransactionData() has this:
>
> >       Assert(!RecoveryInProgress());
>
> So it's easy to see that you will hit that assertion.

Oh, thank you!
I'll fix this and add a test for recovery!

------
Regards,
Alexander Korotkov
Supabase



Commits

  1. Fix GetStrictOldestNonRemovableTransactionId() on standby

  2. Fix typo in GetRunningTransactionData()

  3. Optimize memory access in GetRunningTransactionData()

  4. Fix false reports in pg_visibility

  5. Fix indentation