Re: Patch to implement pg_current_logfile() function

From: "Karl O(dot) Pinc" <kop(at)meme(dot)com>
To: Gilles Darold <gilles(dot)darold(at)dalibo(dot)com>
Cc: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Patch to implement pg_current_logfile() function
Date: 2017-01-19 18:29:35
Message-ID: 20170119122935.14eba51b@slate.meme.com
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On Thu, 19 Jan 2017 12:12:18 -0300
Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> wrote:

> Karl O. Pinc wrote:
> > On Wed, 18 Jan 2017 19:27:40 -0300
> > Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> wrote:
>
> > > I thought this part was odd -- I mean, why is SysLogger_Start()
> > > being called if the collector is not enabled? Turns out we do it
> > > and return early if not enabled. But not in all cases -- there
> > > is one callsite in postmaster.c that avoids the call if the
> > > collector is disabled. That needs to be changed if we want this
> > > to work reliably.
> >
> > Is this an argument for having the current_logfiles always exist
> > and be empty when there is no in-filesystem logfile? It always felt
> > to me that the code would be simpler that way.
>
> I don't know. I am just saying that you need to patch postmaster.c
> line 1726 to remove the second arm of the &&.

Gilles,

I'm not available just now. Can you do this or enlist Michael?

Karl <kop(at)meme(dot)com>
Free Software: "You don't pay back, you pay forward."
-- Robert A. Heinlein

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