| From: | Fujii Masao <masao(dot)fujii(at)gmail(dot)com> |
|---|---|
| To: | Simon Riggs <simon(at)2ndquadrant(dot)com> |
| Cc: | Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>, Robert Haas <robertmhaas(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Synchronization levels in SR |
| Date: | 2010-05-27 12:10:53 |
| Message-ID: | AANLkTindvBFsuFVsNcSakIBpremzNdHxfSR5IPOXoA5h@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, May 27, 2010 at 8:30 PM, Simon Riggs <simon(at)2ndquadrant(dot)com> wrote:
> Why does it? I just explained a design where that wasn't required.
Hmm.. my expression might have been ambiguous. Walreceiver still needs
to wait for WAL flush by walwriter *before* sending the ACK to the master,
in #3 case. Because, in #3, the master has to wait until the standby has
flushed the WAL.
Regards,
--
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center
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