When multiple teams or projects share a single ApsaraDB for HBase cluster, table name collisions become a problem. Namespaces solve this by acting as logical groupings of tables — analogous to databases in a relational database system. Tables in different namespaces can share the same name, so each team or environment can own its table space without interference.
ApsaraDB for HBase includes a predefined namespace named default, which is assigned to any table created without an explicit namespace prefix.
This topic describes how to create and delete namespaces using Lindorm Insight.
Prerequisites
Before you begin, ensure that you have:
Logged on to Lindorm Insight for your cluster (see Log on to Lindorm Insight)
Create a namespace
In the left-side navigation pane of the cluster management system, choose Data Manager > Namespace Manager. All namespaces in the current instance are listed by default.
Click + Add.
In the Add Namespace dialog box, enter the name of the namespace.
NoteNamespace names can contain only letters, digits, hyphens (-), and underscores (_).
Click OK.
Delete a namespace
Delete all tables in the namespace before deleting it. The delete operation fails if the namespace still contains tables.
In the left-side navigation pane of the cluster management system, choose Data Manager > Namespace Manager.
Find the namespace you want to delete and click Delete in the Operation column.
Click OK.