On Tue, Jan 8, 2013 at 10:15 AM, Brian Goetz <brian.goetz at oracle.com> wrote: > Here's a regular reducer that does a two-level groupBy with a downstream > reducer: > Thanks. I was kind of hoping for a longer on-ramp, but I can (just barely) follow this. :-) > Or by examples, did you mean use examples? No, I wanted to see an impl. --tim