Re: WAL, xl_heap_insert and tuple oid mystry

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От Tom Lane
Тема Re: WAL, xl_heap_insert and tuple oid mystry
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Msg-id 19423.1302651285@sss.pgh.pa.us
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Ответ на Re: WAL, xl_heap_insert and tuple oid mystry  (Greg Stark <gsstark@mit.edu>)
Ответы Re: WAL, xl_heap_insert and tuple oid mystry  (Shigeru Hanada <hanada@metrosystems.co.jp>)
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Greg Stark <gsstark@mit.edu> writes:
> On Tue, Apr 12, 2011 at 7:55 AM, Heikki Linnakangas
> <heikki.linnakangas@enterprisedb.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.

No, that's not the case.

> Doesn't pg_lesslog depend on this?

One hopes not.
        regards, tom lane


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