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List: pgsql-bugs
Subject: Re: Logical replication stops dropping used initial-sync replication slots
From: Amit Kapila <amit.kapila16 () gmail ! com>
Date: 2022-03-29 12:19:13
Message-ID: CAA4eK1JZmEeMrRSsfhrevMzchurQEw6s6kkthPK4R+xfxFzPUw () mail ! gmail ! com
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On Tue, Mar 29, 2022 at 5:31 PM hubert depesz lubaczewski
<depesz@depesz.com> wrote:
>
> On Tue, Mar 29, 2022 at 04:57:42PM +0530, Amit Kapila wrote:
> > What was your setting for max_logical_replication_workers? It should
>
> 4 on source, and 50 on replica. That could be related. Should I increase this on source?
>
No that won't matter. The number on the replica only matters which
seems to be okay in your case.
> > be more than max_sync_workers_per_subscription as that is taken from
> > the pool of max_logical_replication_workers. One possible reason for
>
> The thing is that, in next tests, it seemed to *usually* work. And break
> just sometimes.
>
It is possible that some random error is occurring during the initial
copy, difficult to say without seeing the actual error.
> > It is good if you are able to proceed but we might get some clue about
> > the problem you are seeing if you can show subscriber-side logs.
>
> Will keep that in mind. The boxes I was testing it are gone, but if the
> problem will resurface, I'll make the logs available.
>
Thanks, that might help investigate the problem you are facing.
--
With Regards,
Amit Kapila.
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