| From: | Fujii Masao <masao(dot)fujii(at)gmail(dot)com> |
|---|---|
| To: | Simon Riggs <simon(at)2ndquadrant(dot)com> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Florian Pflug <fgp(at)phlo(dot)org>, Dimitri Fontaine <dfontaine(at)hi-media(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgresql(dot)org, Bruce Momjian <bruce(at)momjian(dot)us>, Greg Smith <greg(at)2ndquadrant(dot)com>, Josh Berkus <josh(at)agliodbs(dot)com> |
| Subject: | Re: max_standby_delay considered harmful |
| Date: | 2010-05-11 05:01:23 |
| Message-ID: | AANLkTiktHw60jeEF9rJ2jdc3y9GEOGPWTkkahc_jlUfZ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Mon, May 10, 2010 at 3:27 PM, Simon Riggs <simon(at)2ndquadrant(dot)com> wrote:
> I already explained that killing the startup process first is a bad idea
> for many reasons when shutdown was discussed. Can't remember who added
> the new standby shutdown code recently, but it sounds like their design
> was pretty poor if it didn't include shutting down properly with HS. I
> hope they fix the bug they have introduced. HS was never designed to
> work that way, so there is no flaw there; it certainly worked when
> committed.
New smart shutdown during recovery doesn't kill the startup process until
all of the read only backends have gone away. So it works fine with HS.
Regards,
--
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center
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