Is it possible to have one map operation "talking" to multiple Reduce operations?

[Mark Meissonnier]

Say you have a complicated function that is being called by a map
method, but it produces a lot of information that can be used to produce
two types of indices,
is it possible to have 2 "map" outputs , which branch off respectively
to a reduce1 method and a reduce2 method?
Just trying to be efficient...
Thanks for feedback.
Mark