Re: [TODO] Allow commenting of variables ...

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Zdenek Kotala <Zdenek(dot)Kotala(at)Sun(dot)COM>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: [TODO] Allow commenting of variables ...
Date: 2006-05-10 21:05:24
Message-ID: 200605102105.k4AL5P015383@candle.pha.pa.us
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Here is some work someone has done:

http://archives.postgresql.org/pgsql-patches/2006-03/msg00258.php

See the followup for feedback. Seems it could be cleaned up.

---------------------------------------------------------------------------

Zdenek Kotala wrote:
>
> I would like to implement following item from TODO list:
>
> * Allow commenting of variables in postgresql.conf to restore them to
> defaults. Currently, if a variable is commented out, it keeps the
> previous uncommented value until a server restarted.
>
> Does anybody work on it?
>
> I performed some investigation and I found that signal handler
> (SIGHUP_handler) contents a big code and contents signal nonsafe
> functions. It should generate deadlock or damage some internal data
> structure in the standard c library. See
> http://www.opengroup.org/onlinepubs/009695399/functions/xsh_chap02_04.html for detail. By my opinion is necessary to rewrite signal handling in postmaster to avoid postgres malfunction.
>
>
> Zdenek
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 9: In versions below 8.0, the planner will ignore your desire to
> choose an index scan if your joining column's datatypes do not
> match
>

--
Bruce Momjian http://candle.pha.pa.us
EnterpriseDB http://www.enterprisedb.com

+ If your life is a hard drive, Christ can be your backup. +

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