nz.ac.waikato.cms.moa:moa-kafka (maven):  Massive On-line Analysis is an environment for massive data mining. MOA provides a framework for data stream mining and includes tools for evaluation and a collection of machine learning algorithms. Related to the WEKA project, also written in Java, while scaling to more demanding problems. This artifact enables you to stream data to MOA from Kafka. 
Keywords: clustering|data-stream-mining|java|machine-learning|machine-learning-algorithms|moa|streaming-algorithms