title: How to Copy/Move data between columnfamilies with same structure in cassandra
body: <p>I'm looking for a method to copy/move data in a column family to another with same structure, in same keyspace.</p>
  
  <p>I had already tried the COPY command to import as csv &amp; export the same to destination column family. </p>
  
  <p>Since the data is large, I'm getting timeouts while using COPY.</p>
  
  <p>One method is to write an application to copy data using a client api and add to the other column family.</p>
  
  <p>Is there any tool to copy/move data between different column family? Or any other way?</p>