On Fri, 2020-06-19 at 11:46 +0300, Toomas Kristin wrote:
> I executed a database dump with 4 jobs and here are logs how this ended.
>
> 2020-06-19 02:38:28 UTC:[30953]:ERROR:40001:canceling statement due to conflict with recovery
> 2020-06-19 02:38:28 UTC:[30953]:DETAIL:User query might have needed to see row versions that must be removed.
> 2020-06-19 02:38:28 UTC:[30953]:LOCATION:ProcessInterrupts, postgres.c:3057
> 2020-06-19 02:38:28 UTC:[30953]:STATEMENT:
> 2020-06-19 02:38:28 UTC:[30926]:FATAL:40001:terminating connection due to conflict with recovery
> 2020-06-19 02:38:28 UTC:[30926]:DETAIL:User query might have needed to see row versions that must be removed.
> 2020-06-19 02:38:28 UTC:[30926]:HINT:In a moment you should be able to reconnect to the database and repeat your
command.
> 2020-06-19 02:38:28 UTC:[30926]:LOCATION:ProcessInterrupts, postgres.c:2987
> 2020-06-19 02:38:28 UTC:[30952]:ERROR:40001:canceling statement due to conflict with recovery
> 2020-06-19 02:38:28 UTC:[30952]:DETAIL:User query might have needed to see row versions that must be removed.
> 2020-06-19 02:38:28 UTC:[30952]:LOCATION:ProcessInterrupts, postgres.c:3057
> 2020-06-19 02:38:28 UTC:[30952]:STATEMENT:
> 2020-06-19 02:38:28 UTC:[30953]:LOG:08006:could not receive data from client:Connection reset by peer
> 2020-06-19 02:38:28 UTC:[30953]:LOCATION:pq_recvbuf, pqcomm.c:978
>
> Does it give any hints for anyone? Or how to find right version of source code what to analyse?
Yes, that are conflicts with VACUUM.
Yours,
Laurenz Albe
--
Cybertec | https://www.cybertec-postgresql.com
