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Re: Hot Standby and VACUUM FULL

Simon Riggs <simon@2ndquadrant.com>

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From: Simon Riggs <simon@2ndQuadrant.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>, pgsql-hackers@postgresql.org
Date: 2010-02-01T15:15:39Z
Lists: pgsql-hackers 
On Mon, 2010-02-01 at 10:06 -0500, Tom Lane wrote:

> the assumption that the file is less than one disk block,
> it should be just as atomic as pg_control updates are.

IIRC there were 173 relations affected by this. 4 bytes each we would
have more than 512 bytes.

ISTM you need to treat some of those system relations just as normal
relations rather than give everybody a map entry.

-- 
 Simon Riggs           www.2ndQuadrant.com