Namespaces in ApsaraDB for HBase are defined as logical groups of tables. Different namespaces can have tables with the same name. Different tenants have different namespaces, and each tenant can only access and manage authorized namespaces. This means that different users can only query the table sets within their own namespaces. ApsaraDB for HBase provides a default namespace. If you do not specify a namespace, the system uses the default namespace.

You can use the Java API or HBase Shell to create and delete a namespace. You can also log on to the Cluster Management System to manage namespaces.

Create a namespace

1. On the Namespaces page, choose More > Create Namespace.

2. In the dialog box that appears, enter the namespace name and click OK.

Delete a namespace

On the Namespaces page, click Delete in the Actions column for a namespace to delete the namespace. Note: Before you delete a namespace, you must delete all tables in the namespace. Otherwise, the deletion fails.

Bind a group to the namespace

If you bind a group to the namespace, the tables that are created in this namespace can be automatically associated with the group. For more information, see Manage groups.