82

Cassandra Alter Keyspace

The “ALTER keyspace” command is used to alter the replication factor, strategy name and durable writes properties in created keyspace in Cassandra.

Syntax:

Or

Or

---

Main points while altering Keyspace in Cassandra

• Keyspace Name: Keyspace name cannot be altered in Cassandra.
• Strategy Name: Strategy name can be altered by using a new strategy name.
• Replication Factor: Replication factor can be altered by using a new replication factor.
• DURABLE_WRITES: DURABLE_WRITES value can be altered by specifying its value true/false. By default, it is true. If set to false, no updates will be written to the commit log and vice versa.

Example:

Let’s take an example to demonstrate “Alter Keyspace”. This will alter the keyspace strategy from ‘SimpleStrategy’ to ‘NetworkTopologyStrategy’ and replication factor from 3 to 1 for DataCenter1.

---