Tom Lane <tgl@sss.pgh.pa.us> wrote:
> (I'm also unconvinced that sorting by relation size is a good idea
> anyway. Anything that makes the dump order less predictable gets
> push-back, IME.)
Given that people often use diff on files from pg_dump,
unpredictable ordering can be a bad thing. On the other hand, that
is not something you would probably want to do with the output of a
*parallel* dump, so if it only affect that, it probably makes sense.
It seems like a reasonable heuristic to avoid having all but some
big table done, and having to wait for that while the other
processors are sitting idle.
-Kevin