Re: PG in container w/ pid namespace is init, process exits cause restart

Andres Freund <andres@anarazel.de> writes:
> On 2021-05-03 15:37:24 -0400, Tom Lane wrote:
>> And who's to say that ignoring unexpected child deaths is okay,
>> anyway?  We could hardly be sure that the dead process hadn't been
>> connected to shared memory.

> I don't think checking the exit status of unexpected children to see
> whether we should crash-restart out of that concern is meaningful: We
> don't know that the child didn't do anything bad with shared memory when
> they exited with exit(1), instead of exit(2).

Hmm, by that argument, any unexpected child PID in reaper() ought to be
grounds for a restart, regardless of its exit code.  Which'd be fine by
me.  I'm on board with being more restrictive about this, not less so.

> Do you feel the same about having different logging between the "known"
> and "unknown" child processes?

No objection to logging such cases more clearly, for sure.

            regards, tom lane