Apache Accumulo® is a sorted, distributed key/value store that provides robust, scalable data storage and retrieval.

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Apache Accumulo is based on the design of Google's BigTable and is powered by Apache Hadoop, Apache Zookeeper, and Apache Thrift.

Accumulo has several novel features such as cell-based access control and a server-side programming mechanism that can modify key/value pairs at various points in the data management process.