Re: [HACKERS] Remove secondary checkpoint

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От Andres Freund
Тема Re: [HACKERS] Remove secondary checkpoint
Дата
Msg-id 20171024135535.3dk2txzriyepalmc@alap3.anarazel.de
обсуждение исходный текст
Ответ на Re: [HACKERS] Remove secondary checkpoint  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: [HACKERS] Remove secondary checkpoint  (Robert Haas <robertmhaas@gmail.com>)
Список pgsql-hackers
Дерево обсуждения 
On 2017-10-24 09:50:12 -0400, Tom Lane wrote:
> Simon Riggs <simon@2ndquadrant.com> writes:
> > Remove the code that maintained two checkpoint's WAL files and all
> > associated stuff.
> 
> > Try to avoid breaking anything else
> 
> > This
> > * reduces disk space requirements on master
> > * removes a minor bug in fast failover
> > * simplifies code
> 
> Doesn't it also make crash recovery less robust?

I think it does the contrary. The current mechanism is, in my opinion,
downright dangerous:
https://www.postgresql.org/message-id/20160201235854.GO8743@awork2.anarazel.de

Greetings,

Andres Freund


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