On Wed, Jan 10, 2018 at 2:36 PM, Alvaro Herrera <alvhe...@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
