title: Possible to specify individual Comparators on Column Name?
body: <p>So far, I have been defining the Comparator (which specifies the data type of a Column Name) at the same time when creating Column Family and all the Columns in the family use that same Comparator Data Type. </p>
  
  <pre><code>[default@Voting] create column family User with comparator = UTF8Type;
  </code></pre>
  
  <p>I want to have Columns with different Comparator Data types in a column family.</p>
  
  <p>My Question is this: Is it possible to specify Comparator when defining the meta data for individual Columns in the same way the validation_class for that Column in defined? </p>
  
  <p>E.g.</p>
  
  <pre><code>update column family User with column_metadata = [{column_name: firstName, validation_class: UTF8Type}];
  </code></pre>