> On 25 Apr 2024, at 11:12, Pavel Stehule <pavel.steh...@gmail.com> wrote:
>
> yesterday, I had to fix strange issue on standby server
It’s not just broken reading, if this standby is promoted in HA cluster - this
would lead to data loss.
Recently I’ve observed some lost heap updates ofter OOM-ing cluster on 14.11.
This might be unrelated most probably, but I’ll post a link here, just in case
[0]. In February and March we had 3 clusters with similar problem, and this is
unusually big number for us in just 2 months.
Can you check LSN of blocks with corrupted tuples with pageinpsect on primary
and on standby? I suspect they are frozen on primary, but have usual xmin on
standby.
Best regards, Andrey Borodin.
[0]
https://www.postgresql.org/message-id/flat/67EADE8F-AEA6-4B73-8E38-A69E5D48BAFE%40yandex-team.ru#1266dd8b898ba02686c2911e0a50ab47
