Re: WAL, xl_heap_insert and tuple oid mystry

From: Greg Stark <gsstark(at)mit(dot)edu>
To: Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
Cc: jagan <jaganrvce(at)yahoo(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: WAL, xl_heap_insert and tuple oid mystry
Date: 2011-04-12 23:08:28
Message-ID: BANLkTik+BrxJ1BfUNjX3WVWYannkddf4aA@mail.gmail.com
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On Tue, Apr 12, 2011 at 7:55 AM, Heikki Linnakangas
<heikki(dot)linnakangas(at)enterprisedb(dot)com> wrote:
> Maybe the WAL record you're looking at is a full-page image? A record with a
> full-page image includes a verbatim copy of the page, and the individual
> tuple is omitted in that case.
>

It is? I thought full page images were only in addition to, not
instead of any data in the record. Doesn't pg_lesslog depend on this?

--
greg

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