The docs say DISTINCT can take a custom partitioner. How does that work? What is "K" and "V"? I'm having some doubts the docs are correct. I wrote a test partitioner that does a System.out of K and V. I then wrote simple scripts to do JOIN, GROUP and DISTINCT. For JOIN and GROUP I see my system.outs(*). For DISTINCT, I see nothing....
Using 0.11.1. will