Chris Bandy <bandy.chris@gmail.com> writes:
> [ btree_gist_uuid_8.patch ]
Um ... is there a reason why the penalty logic in gbt_uuid_penalty()
is completely unlike that for any other btree_gist module?
As best I can tell from the (admittedly documentation-free) code
elsewhere, the penalty ought to be proportional to the fraction
by which the original range is expanded; that's not what this
code is doing. It also seems to be missing the machinations related
to scaling per-column results in a multi-column index.
I'm kind of inclined to change uuid_parts_distance to just convert
a given pg_uuid_t to "double" and then apply penalty_num(), as is
done in gbt_macad_penalty.
regards, tom lane