No, that's backwards.

From: Vik Fearing <vik(dot)fearing(at)2ndquadrant(dot)com>
To: pgsql-docs(at)postgresql(dot)org
Subject: No, that's backwards.
Date: 2017-07-09 13:30:54
Message-ID: b6aaa23d-e26f-6404-a30d-e89431492d5d@2ndquadrant.com
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The documentation at
https://www.postgresql.org/docs/current/static/storage-vm.html says that
the visibility map "keeps track of which pages contain only unfrozen
tuples".

This is wrong; it keeps track of all-frozen pages not all-unfrozen.

Trivial patch attached.
--
Vik Fearing +33 6 46 75 15 36
http://2ndQuadrant.fr PostgreSQL : Expertise, Formation et Support

Attachment Content-Type Size
unfrozen.patch text/x-patch 752 bytes

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