Horton

Re: Duplicated LSN in ReorderBuffer

Andres Freund <andres@anarazel.de>

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From: Andres Freund <andres@anarazel.de>
To: Alvaro Herrera <alvherre@2ndquadrant.com>,Masahiko Sawada <sawada.mshk@gmail.com>
Cc: Thomas Munro <thomas.munro@gmail.com>,Ildar Musin <ildar@adjust.com>,PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>,Petr Jelinek <petr@2ndquadrant.com>,Simon Riggs <simon@2ndquadrant.com>
Date: 2019-08-19T15:51:43Z
Lists: pgsql-hackers 
Hi,

On August 19, 2019 7:43:28 AM PDT, Alvaro Herrera <alvherre@2ndquadrant.com> wrote:
>On 2019-Aug-19, Masahiko Sawada wrote:
>
>> On Tue, Aug 13, 2019 at 6:36 AM Alvaro Herrera
><alvherre@2ndquadrant.com> wrote:
>
>> > BTW I wrote the code as suggested and it passes all the tests ...
>but I
>> > then noticed that the unpatched code doesn't fail Ildar's original
>> > pgbench-based test for me, either.  So maybe my laptop is not
>powerful
>> > enough to reproduce it, or maybe I'm doing something wrong.
>> 
>> If you share the patch fixing this issue I'll test it on my
>> environment where I could reproduce the original problem.
>
>Never mind.  I was able to reproduce it later, and verify that Andres'
>proposed strategy doesn't seem to fix the problem.  I'm going to study
>the problem again today.

Could you post the patch?

Andres
-- 
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Commits

  1. logical decoding: process ASSIGNMENT during snapshot build

  2. Ability to advance replication slots