Cambridge-based predictive analytics company RapidMiner announced on Tuesday that it has acquired Radoop, an analytics company that optimizes the big data platform known as Hadoop. Prior to the move, RapidMiner already had an existing partnership with the company, incorporating Radoop’s enterprise-geared big data analytics products into RapidMiner’s suite of predictive analytics offerings. With the acquisition, more of Radoop’s Hadoop tools can be accessed by RapidMiner’s customers, building a larger presence in the Hadoop ecosystem for RapidMiner. The acquisition also brings partnerships with Hadoop platforms Cloudera and Hortonworks, and adds 20 new clients to RapidMiner’s customer base.