Re: Support for N synchronous standby servers - take 2

From: Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>
To: Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>
Cc: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Thom Brown <thom(at)linux(dot)com>, Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, Beena Emerson <memissemerson(at)gmail(dot)com>, Josh Berkus <josh(at)agliodbs(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Support for N synchronous standby servers - take 2
Date: 2016-02-27 19:04:37
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On Fri, Feb 26, 2016 at 10:53 AM, Kyotaro HORIGUCHI
<horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp> wrote:
> At Fri, 26 Feb 2016 10:38:22 +0900 (Tokyo Standard Time), Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp> wrote in <20160226(dot)103822(dot)12680005(dot)horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>
>> Hello, Thanks for the new patch.
>> At Fri, 26 Feb 2016 08:52:54 +0900, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> wrote in <CAD21AoAZKFVu8-MVhkJ3ywAiJmb=P-HSbJTGi=gK1La73KjS6Q(at)mail(dot)gmail(dot)com>
>> > Previous patch could not parse one character standby name correctly.
>> > Attached latest patch.
>> I haven't looked it in detail but it won't work as you
>> expected. flex compains as the following for v12 patch.
>> syncgroup_scanner.l:80: warning, rule cannot be matched
>> syncgroup_scanner.l:84: warning, rule cannot be matched
> Making it independent from postgres body then compile it with
> -DYYDEBUG and set yydebug = 1 would give you valuable information
> and make testing of the parser far easier.

Thank you for your suggestion.
Attached latest version patch.

The changes from previous version are,
- Fix parser, lexer bugs.
- Add regression test patch based on patch Suraji submitted.

Please review it.


Masahiko Sawada

Attachment Content-Type Size
000_multi_sync_replication_v13.patch application/octet-stream 43.1 KB

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