title: Querying on cassandra consumes CPU
body: <p>Connecting to Cassandra from application code and querying consumes Cassandra's CPU.</p>
  
  <p>My query is like :: <code>select fields from table where partition_key = "PARTITION_KEY" and clustering_key_1 = "KEY1" and clustering_key_2 in (a1, a2, a3..a100);</code></p>
  
  <p>I am using <code>in</code> keyword on clustering columns only. But it still afffects the CPU badly. Sometimes the CPU reaches 100%.</p>
  
  <p>Is this normal ?</p>