Friday, January 11, 2013

Apache Cassandra : Starting with Command Line Interface

Starting with Apache Cassandra Command Line Interface

Command Line Interface (CLI) can be used to interact with Apache Cassandra server and execute the some execution that be done by using Client code.
Now, I’ll walk you thru some basic operations with Apache Cassandra Command Line Interface (CLI).

Step 1: Start the Apache Cassandra Server by running <Cassandra_home>\bin\Cassandra.bat file.

Step 2: Start the Command Line Interface from <Cassandra_home>\bin\cassandra-cli.bat

Step 3: Connect you Cassandra CLI with Cassandra Server.
Command: connect localhost/9160;

Step 4: Displaying existing Keyspaces.
Command : show keyspaces;
Description: It will display all the existing keyspaces in the connected Cassandra server.

Step 5: Creating new keyspace;
Command : Create keyspace <keyspacename>;
Ex: create keyspace MuraliKeySpace;

Step 6: Use existing keyspace;
Command : use <keyspacename>;
Ex: use MuraliKeySpace;
Once you connected to any keyspace, the default@unknown will be changed to
default@<KeySpaceName>. Now, it is changed to default@MuraliKeySpace.

Step 7: Creating column family.
Command: create column family <ColumnFamilyName>;
Ex: create column family users;

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