Re: Default mode for shutdown

Josh Kupershmidt <schmiddy@gmail.com>

From: Josh Kupershmidt <schmiddy@gmail.com>

To: Alvaro Herrera <alvherre@commandprompt.com>

Cc: Robert Haas <robertmhaas@gmail.com>, Tom Lane <tgl@sss.pgh.pa.us>, Magnus Hagander <magnus@hagander.net>, PostgreSQL-development <pgsql-hackers@postgresql.org>

Date: 2010-12-16T21:47:51Z

Lists: pgsql-hackers

On Wed, Dec 15, 2010 at 10:11 AM, Alvaro Herrera
<alvherre@commandprompt.com> wrote:
> It occurs to me that we may need a new mode, which disconnects sessions
> that are not in a transaction (or as soon as they are) but leaves
> in-progress transactions alone; this could be the new default.  Of
> course, this is much more difficult to implement than the current modes.

I like this idea, if it's feasible. Might I also suggest that the
smart-mode shutdown give a HINT to the user that he can forcibly kill
off existing sessions using -m fast. Right now, we  show something
like this:

$ pg_ctl -D PGDATA stop
waiting for server to shut down....
........................................................... failed
pg_ctl: server does not shut down

And it's not immediately obvious to the user why the server didn't
shut down, or how to fix things.

Josh