itaps-parallel Proposal for handling queries with parts, sets, and partitions

[Onkar Sahni]

> So again, I go back to asking: what are the core needs that prevent us
> from using sets as both parts and partitions?  The entity set mechanism
> was designed with this specific usage in mind.

If "sets as both parts and partitions" mean using entity-sets then we have
already discussed this in great detail. I think the question in discussion
is irrespective of how one implements parts and partitions? If I
understood the question right then we need to answer queries which involve
a specific part and a specific entity-set (where entity-set may span more
than one part, may be local to a process). Now, if it is implied that
choosing entity-sets for both parts and partitions allows to use set
operations (booleans), outside the interface explicitly by applications,
to answer such queries well then applications might as well do it in other
equivalent ways (for example, loop over entities in set and ask residence
parts to get entities in the entity-sey belonging to a specific part).

- Onkar