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help / color / mirror / Atom feedFrom: Antonin Houska <[email protected]>
To: Andres Freund <[email protected]>
Cc: Mihail Nikalayeu <[email protected]>
Cc: Amit Kapila <[email protected]>
Cc: Alvaro Herrera <[email protected]>
Cc: Srinath Reddy Sadipiralla <[email protected]>
Cc: Matthias van de Meent <[email protected]>
Cc: Pg Hackers <[email protected]>
Cc: Robert Treat <[email protected]>
Subject: Re: Adding REPACK [concurrently]
Date: Tue, 14 Apr 2026 15:37:56 +0200
Message-ID: <112208.1776173876@localhost> (raw)
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Andres Freund <[email protected]> wrote:
> On 2026-04-12 15:31:20 +0200, Mihail Nikalayeu wrote:
> > Instead of cancelling the backend entered the deadlock detector - it
> > cancel some another (nearest hard edge) until it is possible to get the
> > lock (either by
> > reordering or directly).
>
> I don't think that's as good. The problem is that that way you're only
> detecting the deadlocks once they have materialized (i.e. once repack actually
> does the lock upgrade), rather than cancelling when we know that the problem
> starts.
This is my hack that tries to do that.
--
Antonin Houska
Web: https://www.cybertec-postgresql.com
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Subject: Re: Adding REPACK [concurrently]
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