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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: Tomas Vondra <tomas.vondra@2ndquadrant.com>
Cc: Kuntal Ghosh <kuntalghosh.2007@gmail.com>, Tom Lane <tgl@sss.pgh.pa.us>, Robert Haas <robertmhaas@gmail.com>, Andres Freund <andres@anarazel.de>, Thomas Munro <thomas.munro@enterprisedb.com>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2019-09-19T04:23:05Z
Lists: pgsql-hackers 
On Wed, Sep 18, 2019 at 11:58:08PM +0200, Tomas Vondra wrote:
> I kinda suspect it might be just a coincidence that it fails during that
> particular test. What likely plays a role here is a checkpoint timing
> (AFAICS that's the thing removing the file).  On most systems the tests
> complete before any checkpoint is triggered, hence no issue.
> 
> Maybe aggressively triggering checkpoints on the running cluter from
> another session would do the trick ...

Now that I recall, another thing I forgot to mention on this thread is
that I patched guc.c to reduce the minimum of checkpoint_timeout to
1s.
--
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