| From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
|---|---|
| To: | Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> |
| Cc: | Andres Freund <andres(at)anarazel(dot)de>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Ildar Musin <ildar(at)adjust(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Petr Jelinek <petr(at)2ndquadrant(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com> |
| Subject: | Re: Duplicated LSN in ReorderBuffer |
| Date: | 2019-08-19 14:43:28 |
| Message-ID: | 20190819144328.GA10568@alvherre.pgsql |
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| Lists: | pgsql-hackers |
On 2019-Aug-19, Masahiko Sawada wrote:
> On Tue, Aug 13, 2019 at 6:36 AM Alvaro Herrera <alvherre(at)2ndquadrant(dot)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.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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