def init_tables
      # Do nothing if keyspace already exists
      if @cassandra.keyspaces.include?(@keyspace)
        @cassandra.keyspace = @keyspace
      else
        freq_table    = Cassandra::ColumnFamily.new({:keyspace => @keyspace, :name => "classes"}) # word  => {classname => count}
        summary_table = Cassandra::ColumnFamily.new({:keyspace => @keyspace, :name => "totals"})  # class => {wordcount => count}
        ks_def = Cassandra::Keyspace.new({
            :name               => @keyspace,
            :strategy_class     => 'org.apache.cassandra.locator.SimpleStrategy',
            :replication_factor => 1,
            :cf_defs            => [freq_table, summary_table] 
          })
        @cassandra.add_keyspace ks_def
        @cassandra.keyspace = @keyspace
      end
    end
def init_tables
      # Do nothing if keyspace already exists
      if @cassandra.keyspaces.include?(@keyspace)
        @cassandra.keyspace = @keyspace
      else
        freq_table    = Cassandra::ColumnFamily.new({:keyspace => @keyspace, :name => "classes"}) # word  => {classname => count}
        summary_table = Cassandra::ColumnFamily.new({:keyspace => @keyspace, :name => "totals"})  # class => {wordcount => count}
        ks_def = Cassandra::Keyspace.new({
            :name               => @keyspace,
            :strategy_class     => 'org.apache.cassandra.locator.SimpleStrategy',
            :replication_factor => 1,
            :cf_defs            => [freq_table, summary_table] 
          })
        @cassandra.add_keyspace ks_def
        @cassandra.keyspace = @keyspace
      end
    end
Create required keyspace and column families