Using Apache Phoenix to store and access data
Also available as:

Overview of mapping Phoenix schemas to HBase namespaces

You can map a Phoenix schema to an HBase namespace to gain multitenancy features in Phoenix.

HBase, which is often the underlying storage engine for Phoenix, has namespaces to support multitenancy features. Multitenancy helps an HBase user or administrator perform access control and quota management tasks. Also, namespaces enable tighter control of where a particular data set is stored on RegionsServers. See Enabling Multitenancy with Namepaces for further information.

Prior to HDP 2.5, Phoenix tables could not be associated with a namespace other than the default namespace.