On Fri, Mar 4, 2016 at 11:17 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Robert Haas <robertmhaas@gmail.com> writes:
>> On Fri, Mar 4, 2016 at 11:03 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>>> Well, that would make the function more complicated, but maybe it's a
>>> better answer. On the other hand, we know that the stats updates are
>>> delivered in a deterministic order, so why not simply replace the
>>> existing test in the wait function with one that looks for the truncation
>>> updates? If we've gotten those, we must have gotten the earlier ones.
>
>> I'm not sure if that's actually true with parallel mode. I'm pretty
>> sure the earlier workers will have terminated before the later ones
>> start, but is that enough to guarantee that the stats collector sees
>> the messages in that order?
>
> Huh? Parallel workers are read-only; what would they be doing sending
> any of these messages?
Mumble. I have no idea what's happening here.
--
Robert Haas
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