title: Count rows in table
body: <p>I have a trouble with the rows counting of very huge table in Cassandra DB.</p>
  
  <p>Simple statement:</p>
  
  <pre><code>SELECT COUNT(*) FROM my.table;
  </code></pre>
  
  <p>Invokes the timeout error:</p>
  
  <pre><code>OperationTimedOut: errors={}, ...
  </code></pre>
  
  <p>I have increased client_timeout in ~/.cassandra/cqlshrc file:</p>
  
  <pre><code>[connection]
  client_timeout = 900
  </code></pre>
  
  <p>Statement is running this time and invokes OperationTimeout error again. How can I count rows in table?</p>