Re: [GENERAL] Streaming Replication limitations

From: Jeff Davis <pgsql(at)j-davis(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Simon Riggs <simon(at)2ndQuadrant(dot)com>, Devrim GÜNDÜZ <devrim(at)gunduz(dot)org>, raghu ram <raghuchennuru(at)gmail(dot)com>, pgsql-admin <pgsql-admin(at)postgresql(dot)org>, pgsql-general <pgsql-general(at)postgresql(dot)org>
Subject: Re: [GENERAL] Streaming Replication limitations
Date: 2011-04-14 23:30:46
Message-ID: 1302823846.7584.2.camel@jdavis-ux.asterdata.local
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On Wed, 2011-04-13 at 14:42 -0400, Tom Lane wrote:
> Simon Riggs <simon(at)2ndQuadrant(dot)com> writes:
> > 2011/4/13 Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>:
> >> Short answer is to test the case you have in mind and see.
>
> > That's the long answer, not least because the absence of a failure in
> > a test is not conclusive proof that it won't fail at some point in the
> > future while in production.
>
> Not really. Every known source of incompatibility (endianness,
> alignment, float format, etc) is checked at postmaster startup via
> entries in pg_control.

I seem to remember that Mac and Linux have a different notion of what
en_US collation means (I couldn't find any standard anywhere to say that
one was right and the other was wrong). So, that risks index corruption.

Regards,
Jeff Davis

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