🔗 Accumulo: NSA's Apache-licensed BigTable-based key-value store

🔗 Computing 🔗 Computing/Software 🔗 Computing/Free and open-source software 🔗 Databases 🔗 Databases/Computer science

Apache Accumulo is a highly scalable sorted, distributed key-value store based on Google's Bigtable. It is a system built on top of Apache Hadoop, Apache ZooKeeper, and Apache Thrift. Written in Java, Accumulo has cell-level access labels and server-side programming mechanisms. According to DB-Engines ranking, Accumulo is the third most popular NoSQL wide column store behind Apache Cassandra and HBase and the 67th most popular database engine of any type (complete) as of 2018.