code: private void createKeyspace() throws Exception
      {
          if (cql_version != null && cql_version.equals(CassandraConstants.CQL_VERSION_3_0))
          {
              onCql3CreateKeyspace();
          }
          else
          {
              Map<String, String> strategy_options = new HashMap<String, String>();
              List<CfDef> cfDefs = new ArrayList<CfDef>();
              KsDef ksDef = new KsDef(databaseName, csmd.getPlacement_strategy(databaseName), cfDefs);
              setProperties(ksDef, strategy_options);
              ksDef.setStrategy_options(strategy_options);
              cassandra_client.system_add_keyspace(ksDef);
          }
      }
docs: Creates keyspace.
  
  @throws Exception
  the exception