Re: crash sometimes doesn't terminate, loops forever looking for a process that doesn't exist

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On Tue, Nov 8, 2011 at 10:16 PM, Dave Anderson <anderson@xxxxxxxxxx> wrote:
>
>
> ----- Original Message -----
>> On Mon, Nov 7, 2011 at 2:24 PM, Dave Anderson <anderson@xxxxxxxxxx>
>> wrote:
>> > I would be a little hesitant to get rid of the pc->pipe_pid at this point
>> > in time.
>> >
>> > I can't seem to be able to reproduce it, but certainly there should
>> > be an escape valve in output_commands_to_pid() to recognize it and bail
>> > out.  But I presume that your piped command sequence actually worked,
>> > and so it would be strange/unnecessary for setup_redirect() to do the
>> > error(FATAL_RESTART, ...) that it currently does when output_commands_to_pid()
>> > returns with a NULL?
>>
>> I am not sure either what happened exactly but as far as I can tell
>> the piped command didn't really work since it terminated before
>> reading anything from its stdin. I am not sure how to reproduce the
>> problem and it may very well be symptomatic of a problem in our
>> environment but I know it happened at least twice (cores available on
>> demand). So I think error(FATAL_RESTART) is actually appropriate (or
>> at least more appropriate than looping forever). Or do you think it's
>> important to get the return value of the child before deciding what
>> to do?
>>
>> > Anyway, my point is to try to keep the fix as simple as possible...
>>
>> Makes sense.
>
> Adrien,
>
> How does the attached patch work for you?

Thanks for the quick response time. I am sorry but I am unlikely to be
able to test this patch until mid December.

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