Re: hot_standby = on

From: Andrew Dunstan <andrew(at)dunslane(dot)net>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: hot_standby = on
Date: 2010-06-08 22:33:01
Message-ID: 4C0EC51D.8090509@dunslane.net
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Tom Lane wrote:
> Andrew Dunstan <andrew(at)dunslane(dot)net> writes:
>
>> Well, yes. But then to stop that you could just lock users out using
>> pg_hba.conf, no? It just doesn't seem to be buying all that much to me.
>>
>
> The main reason to turn it off is to disable a whole lot of very poorly
> tested code, and thereby improve the reliability of your warm standby
> server. There might be (almost certainly are) significant performance
> benefits as well. I think it'll be at least a couple of release cycles
> before any sane DBA would turn it on on standbys where he didn't
> positively need it.
>
>
>

OK, then we need to say something like that. Right now we're not giving
any guidance that I can see.

cheers

andrew

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