A general overview of the APACHE SAMOA platform for mining big data streams using machine learning algorithms running on distributed stream processing platforms such as Apache STORM, Apache Flink, Apache Samza and Apache Apex. Results are shown from experimentation with VHT, the Vertical Hoeffding Tree proposed in "VHT: Vertical Hoeffding Tree." N. Kourtellis, G. De Francisci Morales, A. Bifet, A. Mordupo. IEEE BigData 2016. Presentation in APACHE BIG DATA North America 2016