Robert Haas <[email protected]> writes:
> On Wed, Oct 26, 2016 at 7:12 AM, Ashutosh Bapat
> <[email protected]> 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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