May 31 (Reuters) - Private-equity firms KKR & Co and Clayton Dubilier & Rice LLC are nearing a deal to buy Cloudera Inc and take the software company private, the WSJ reported on Monday, citing people familiar with the matter. The terms of the deal couldn"t be learned, the report on.wsj.com/2SLfw89 said, adding that the company has a market value of nearly $4 billion. (Reporting by Nandakumar D in Bengaluru; editing by Uttaresh.V) Our Standards: The Thomson Reuters Trust Principles.