Robert Haas <> writes:
> On Wed, Oct 26, 2016 at 7:12 AM, Ashutosh Bapat
> <> wrote:
>> Also, many other SIGQUIT handlers like bgworker_quickdie() call 
>> on_exit_reset()
>> followed by exit(2) instead of just exit(1) in pgstat_quickdie(). Why is this
>> difference?

> Well, for that, you'd need to look at how postmaster.c treats those
> exit codes.  exit(2) from a regular backend or background worker will
> cause a crash-and-restart cycle; I'm not sure whether the handling for
> the stats collector is similar or different.

I'm fairly sure it's different --- there are different policies for
child processes that aren't connected to shared memory (such as the
stats collector) because we shouldn't force a system-wide restart
when they crash.

                        regards, tom lane

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