Re: Support for N synchronous standby servers - take 2

From: Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Thom Brown <thom(at)linux(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: 2016-04-11 01:58:06
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On Sat, Apr 9, 2016 at 12:32 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Jeff Janes <jeff(dot)janes(at)gmail(dot)com> writes:
>> When I compile now without cassert, I get the compiler warning:
>> syncrep.c: In function 'SyncRepUpdateConfig':
>> syncrep.c:878:6: warning: variable 'parse_rc' set but not used
>> [-Wunused-but-set-variable]
> If there's a good reason for that to be an Assert, I don't see it.
> There are no callers of SyncRepUpdateConfig that look like they
> need to, or should expect not to have to, tolerate errors.
> I think the way to fix this is to turn the Assert into a plain
> old test-and-ereport-ERROR.

I've changed the draft patch Amit implemented so that it doesn't parse
twice(check_hook and assign_hook).
So assertion that was in assign_hook is no longer necessary.

Please find attached.


Masahiko Sawada

Attachment Content-Type Size
fix_sync_rep_update_conf_v2.patch text/x-patch 5.2 KB

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