Re: Synchronous Log Shipping Replication

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Simon Riggs <simon(at)2ndQuadrant(dot)com>
Cc: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Markus Wanner <markus(at)bluegap(dot)ch>, ITAGAKI Takahiro <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Synchronous Log Shipping Replication
Date: 2008-09-09 12:50:27
Message-ID: 23582.1220964627@sss.pgh.pa.us
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Simon Riggs <simon(at)2ndQuadrant(dot)com> writes:
> On Tue, 2008-09-09 at 08:24 -0400, Tom Lane wrote:
>> "Agreed"? That last restriction is a deal-breaker.

> OK, I should have said *if wal_buffers are full* XLogInsert() cannot
> advance to a new page while we are waiting to send or write. So I don't
> think its a deal breaker.

Oh, OK, that's obvious --- there's no place to put more data.

regards, tom lane

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