New Cassandra Boasts 2 Billion Columns Per Row Capacity
The latest version of the open source Cassandra distributed database is able to store 2 billion columns per row.
The Large Row Support feature was added in Cassandra version 0.7. While there was no previous upper limit set in previous versions of Cassandra, the maximum amount of material a single row of data could hold was approximately 2GB, Jackson said. That limit has been eliminated.