addthis/hydra — pull request #100 by alstaplesmoore (2014-06-05 19:59:28+00:00)
Title: CountMinSketch merge fix

In its present state, CountMinSketch returns a custom CMS value object, which are "merged" together incorrectly (in essence, we arbitrarily take the last count.) After discussing with Ian, it is actually more accurate to ask each CountMinSketch for a count separately, then adding these subcounts together. This pull request fixes the issue and adds a unit test to ensure basic CMS behavior.