2012-03-26 Apache Accumulo The Apache Accumulo sorted, distributed key/value store is based on Google's BigTable design. It is built on top of Apache Hadoop, Zookeeper, and Thrift. It features a few novel improvements on the BigTable design in the form of cell-level access labels and a server-side programming mechanism that can modify key/value pairs at various points in the data management process. Java Apache Accumulo 2014-09-24 1.6.1 Apache Accumulo 2014-05-06 1.6.0 Apache Accumulo 2014-09-22 1.5.2 Apache Accumulo 2014-02-27 1.5.1 Apache Accumulo 2014-04-03 1.4.5 Apache Accumulo 2012-07-09 1.3.6 Billie Rinaldi