Re: ALTER SYSTEM SET command to change postgresql.conf parameters

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>
Cc: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Tatsuo Ishii <ishii(at)postgresql(dot)org>, Hari Babu <haribabu(dot)kommi(at)huawei(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: ALTER SYSTEM SET command to change postgresql.conf parameters
Date: 2014-01-06 19:22:10
Message-ID: CA+TgmoZXAKLz-HBZA-F7z4uWZt8HQwE933jBmzqHWGngrZ0F6Q@mail.gmail.com
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On Mon, Jan 6, 2014 at 9:48 AM, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
>> Couldn't we also handle this by postponing FreeConfigVariables until
>> after the if (error) block?
>
> Wouldn't doing that way can lead to bigger memory leak, if error level
> is ERROR. Though in current fix also it can leak memory but it will be
> just for ErrorConfFile_save. I think some similar case can happen for
> 'pre_value' in code currently as well, that's why I have fixed it in a
> similar way in patch.

I was assuming that error-recovery would reset the containing memory
context, but I'm not sure what memory context we're executing in at
this point.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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