At Wed, 16 Feb 2022 15:22:27 +0900 (JST), Kyotaro Horiguchi <horikyota.ntt@gmail.com> wrote in
> At Wed, 16 Feb 2022 14:58:23 +0900, Masahiko Sawada <sawada.mshk@gmail.com> wrote in
> > Or it's possible that the process took a time to clean up the
> > temporary replication slot?
>
> Checkpointer may take ReplicationSlotControlLock. Dead lock between
> ReplicationSlotCleanup and InvalidateObsoleteReplicationSlots
> happened?
Or missing CV broadcast? Anyway I haven't find a scenario of
interfering between checkpointer and walsender.
regards.
--
Kyotaro Horiguchi
NTT Open Source Software Center