| From: | Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com> |
|---|---|
| To: | sawada(dot)mshk(at)gmail(dot)com |
| Cc: | andres(at)anarazel(dot)de, hlinnaka(at)iki(dot)fi, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Race conditions in 019_replslot_limit.pl |
| Date: | 2022-02-16 07:12:24 |
| Message-ID: | 20220216.161224.1895701800767011322.horikyota.ntt@gmail.com |
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| Lists: | pgsql-hackers |
At Wed, 16 Feb 2022 15:22:27 +0900 (JST), Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com> wrote in
> At Wed, 16 Feb 2022 14:58:23 +0900, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)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
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