On Wed, Jan 10, 2018 at 2:36 PM, Alvaro Herrera <alvherre@alvh.no-ip.org> wrote:
> I think "one at a time" is not the right way to interpret the affix.
> Rather, a "partitionwise join" is a join done "in the manner of
> partitions", that is, the characteristics of the partitions are
> considered when the join is done.
>
> I'm not defending the "leader-wise" term here, though, because I can't
> make sense of it, regardless of how I interpret the -wise affix.
I've already conceded the point, but fwiw "leader-wise" comes from the
idea of having a leader-wise space following concatenating worker
tapes (who have original/worker-wise space). We must apply an offset
to get from a worker-wise offset to a leader-wise offset.
This made more sense in an earlier version. I overlooked this during
recent self review.
--
Peter Geoghegan