Re: [GSoC2014] Patch ALTER TABLE ... SET LOGGED
От | Alvaro Herrera |
---|---|
Тема | Re: [GSoC2014] Patch ALTER TABLE ... SET LOGGED |
Дата | |
Msg-id | 20140822194722.GR6343@eldon.alvh.no-ip.org обсуждение исходный текст |
Ответ на | Re: [GSoC2014] Patch ALTER TABLE ... SET LOGGED (Fabrízio de Royes Mello <fabriziomello@gmail.com>) |
Список | pgsql-hackers |
Fabrízio de Royes Mello wrote: > On Fri, Aug 22, 2014 at 4:22 PM, Robert Haas <robertmhaas@gmail.com> wrote: > > 2. The patch seems to think that it can sometimes be safe to change > > the relpersistence of an existing relation. Unless you can be sure > > that no buffers can possibly be present in shared_buffers and nobody > > will use an existing relcache entry to read a new one in, it's not, > > because the buffers won't have the right BM_PERSISTENT marking. I'm > > very nervous about the fact that this patch seems not to have touched > > bufmgr.c, but maybe I'm missing something. > > Because of this concern I implement a solution pointed by Andres [1]. Actually what you did was better than what he suggested. -- Álvaro Herrera http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services
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