Robert Haas wrote:

> 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?

Um.  So if you have two queries that run in sequence, it's possible
for workers of the first query to be still running when workers for the
second query finish?  That would be very strange.

If that's not what you're saying, I don't understand what guarantees you
say we don't have.

Álvaro Herrera      
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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