On Jun 13, 2013, at 5:16 PM, Tom Lane <t...@sss.pgh.pa.us> wrote:

> Jeff Frost <j...@pgexperts.com> writes:
>> On Jun 13, 2013, at 4:50 PM, Tom Lane <t...@sss.pgh.pa.us> wrote:
>>> ...  So one theory about this would be that those processes
>>> aren't absorbing the GUC updates, perhaps because the SIGHUP signals the
>>> postmaster should be sending them are getting lost.
> 
>> Interestingly, it will often pick them up if you wait a few seconds and send 
>> it another reload.
> 
> Hmm, that definitely lends some credence to the lost-signal theory,
> since another reload would cause the postmaster to again signal all
> its children, and this time the signal might go through.
> 
> But I still have no idea how we might debug further.  You could possibly
> try something like strace'ing the processes, but it seems fairly likely
> that the Heisenberg principle would apply if you did.

What I don't understand is the new log file being created from the new 
log_filename setting but then nothing being logged into it.  Is it the 
postmaster which creates that file?  I would've thought it would be the logger 
process?

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