Re: Add shutdown_at_recovery_target option to recovery.conf - Mailing list pgsql-hackers

On 2014-11-19 16:04:49 +0000, Simon Riggs wrote:
> On 19 November 2014 15:57, Andres Freund <andres@2ndquadrant.com> wrote:
> > On 2014-11-19 15:47:05 +0000, Simon Riggs wrote:
> >> > Also, for the Shutdown itself, why are we not using
> >> >    kill(PostmasterPid, SIGINT)?
> >>
> >> Done
> >
> > I don't think that's ok. The postmaster is the one that should be in
> > control, not some subprocess.

Just as an example why I think this is wrong: Some user could just
trigger replication to resume and we'd be in some awkward state.

> > I fail to see the win in simplicity over using exit (like we already do
> > for the normal end of recovery!) is. The issue with the log line seems
> > perfectly easily to avoid by just checking the exit code in
> > postmaster.c.
>
> We need to be able to tell the difference between a crashed Startup
> process and this usage.

Exit code, as suggested above.

Greetings,

Andres Freund

-- Andres Freund                       http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training &
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