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Re: replay_location indicates incorrect location

From: Simon Riggs <simon(at)2ndQuadrant(dot)com>
To: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: replay_location indicates incorrect location
Date: 2012-01-13 11:09:42
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
On Fri, Jan 13, 2012 at 10:04 AM, Fujii Masao <masao(dot)fujii(at)gmail(dot)com> wrote:

> When I looked at pg_stat_replication just after starting the standby before
> executing any write transactions on the master, I found that replay_location
> indicated incorrect location different from sent/write/flush_location. Then,
> if I ran write transaction on the master, replay_location indicated the same
> location as the others.
> The cause of this problem is that Xlogctl->recoveryLastRecPtr which points
> to replay_location is initialized with wrong variable ReadRecPtr. Instead, it
> should be initialized with EndRecPtr. Attached patch does that. This needs
> to be backported to 9.0.

Agreed. Will commit.

 Simon Riggs         
 PostgreSQL Development, 24x7 Support, Training & Services

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