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Re: subscriptionCheck failures on nightjar

Michael Paquier <michael@paquier.xyz>

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From: Michael Paquier <michael@paquier.xyz>
To: Andres Freund <andres@anarazel.de>
Cc: Thomas Munro <thomas.munro@enterprisedb.com>, Tom Lane <tgl@sss.pgh.pa.us>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2019-08-13T08:04:35Z
Lists: pgsql-hackers 
On Wed, Feb 13, 2019 at 01:51:47PM -0800, Andres Freund wrote:
> I'm not yet sure that that's actually something that's supposed to
> happen, I got to spend some time analysing how this actually
> happens. Normally the contents of the slot should actually prevent it
> from being removed (as they're newer than
> ReplicationSlotsComputeLogicalRestartLSN()). I kind of wonder if that's
> a bug in the drop logic in newer releases.

In the same context, could it be a consequence of 9915de6c which has
introduced a conditional variable to control slot operations?  This
could have exposed more easily a pre-existing race condition.
--
Michael

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Fix "base" snapshot handling in logical decoding