There have been two approaches: Riak and Cassandra stress availability, while HBase has stressed consistency.

FORBES: What You Need to Know About NoSQL Databases

HBase describes itself as a database that can store billions of rows with millions of columns.

FORBES: What You Need to Know About NoSQL Databases

The same thing applies to column-oriented databases, such as HBase and Cassandra.

FORBES: What You Need to Know About NoSQL Databases

Namely, it has contributed enhancements to HDFS, YARN, HBase and Hive projects.

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It has a database (Hbase), an analytics environment (MapReduce, Hive, Mahout, etc.), and visualization tools (IBM BigInsights being one of many on the market).

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Co-founder Jonathan Gray is a former Facebook HBase guru.

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Built on top of LucidWorks Search, LucidWorks Big Data certifies and integrates all of the Apache open source components necessary to develop and manage a big data application, including Hadoop, Mahout, HBase, Zookeeper, Pig, and other software tools.

FORBES: LucidWorks: Bringing Search to Big Data

See comment above re HBase.

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