Re: Is anyone aware of data loss causing MultiXact bugs in 9.3.2?

From: Andres Freund <andres(at)2ndquadrant(dot)com>
To: Peter Geoghegan <pg(at)heroku(dot)com>
Cc: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Is anyone aware of data loss causing MultiXact bugs in 9.3.2?
Date: 2014-02-19 09:06:46
Message-ID: 20140219090646.GF28858@alap3.anarazel.de
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On 2014-02-19 00:55:03 -0800, Peter Geoghegan wrote:
> On Wed, Feb 19, 2014 at 12:40 AM, Andres Freund <andres(at)2ndquadrant(dot)com> wrote:
> > Was there an index only scan or just a index scan? Any chance of a
> > corrupted index?
>
> Just an index scan. I think it's unlikely to be a corrupt index,
> because the customer said that he dropped and restored the index, and
> it's difficult to imagine how VACUUM FREEZE could then have impacted a
> plan with only a sequential scan.

I am wondering whether it's possibly either the vm or the all-visible
flag on the page...

Greetings,

Andres Freund

--
Andres Freund http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services

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