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Re: Standbys, txid_current_snapshot, wraparound

From: Andrey Velikoredchanin <uncleandyv(at)gmail(dot)com>
To: Marko Kreen <markokr(at)gmail(dot)com>
Cc: Simon Riggs <simon(at)2ndquadrant(dot)com>, Daniel Farina <daniel(at)heroku(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Standbys, txid_current_snapshot, wraparound
Date: 2012-03-29 08:57:38
Message-ID: CAOrB69MRObgp2HsWhCGW6jhsw4xH+LvUr7a-kbwcix_ggecvsA@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-hackers
2012/3/29 Marko Kreen <markokr(at)gmail(dot)com>

> I can't find a place where WAL replay updates values under XLogCtl.
> If that really does not happen, that would explain why standbys can
> see wrong epoch.
>
> No clue yet how master can get broken.
>
>
Details about environment:

Debian

Linux db 2.6.32-5-amd64 #1 SMP Fri Sep 9 20:23:16 UTC 2011 x86_64 GNU/Linux

# SELECT version();
 PostgreSQL 9.1.1 on x86_64-unknown-linux-gnu, compiled by gcc-4.4.real
(Ubuntu 4.4.3-4ubuntu5) 4.4.3, 64-bit

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