Re: Terminating a backend

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Terminating a backend
Date: 2008-03-10 19:18:19
Message-ID: 200803101918.m2AJIJ527080@momjian.us
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Tom Lane wrote:
> Bruce Momjian <bruce(at)momjian(dot)us> writes:
> > I am suggesting we add a new fuction pg_terminate_backend() that does
> > everything just like cancel, but also sets a global variable that we
> > check in the loop where we look for the next command and if it is set,
> > we exit the backend.
>
> And if you never *get* to that loop, what have you accomplished?
>
> Keep in mind that 99% of the excuse for people to want to use SIGTERM is
> that the backend isn't responding to SIGINT. If you've fixed things so
> that SIGTERM cannot get them out of any situation that SIGINT doesn't
> get them out of, I don't think it's a step forward.

What I hear people ask is that they don't want the backend to read the
next command but to exit. That seems like a reasonable request.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://postgres.enterprisedb.com

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

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