Re: [CORE] back-branch multixact fixes & 9.5 alpha/beta: schedule

From: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
To: Josh Berkus <josh(at)agliodbs(dot)com>
Cc: "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Andres Freund <andres(at)anarazel(dot)de>, Robert Haas <robertmhaas(at)gmail(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>, pgsql-core <pgsql-core(at)postgresql(dot)org>
Subject: Re: [CORE] back-branch multixact fixes & 9.5 alpha/beta: schedule
Date: 2015-06-08 21:20:31
Message-ID: 20150608212031.GS133018@postgresql.org
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Josh Berkus wrote:
> On 06/08/2015 12:48 PM, Alvaro Herrera wrote:
> > Well, reputation-wise we're already losing every time somebody's server
> > crashes on 9.4.2 and finds it won't start, where it did start fine with
> > 9.4.1. Maybe they simply wanted to change shared_buffers and the server
> > won't start anymore. Some people even update binaries with the server
> > running; if they don't restart immediately, it could be several days
> > before it fails to start. It's pretty scary.
>
> I'm confused by this discussion. 9.4.3 is released.

The bug was not fixed by 9.4.3. It was fixed by this commit:

Author: Robert Haas <rhaas(at)postgresql(dot)org>
Branch: master [068cfadf9] 2015-06-05 09:31:57 -0400
Branch: REL9_4_STABLE [b6a3444fa] 2015-06-05 09:33:52 -0400
Branch: REL9_3_STABLE [2a9b01928] 2015-06-05 09:34:15 -0400

Cope with possible failure of the oldest MultiXact to exist.

--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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