title: Cassandra Python Driver Reproducible Timeouts
body: <p>We are trying to use Apache Cassandra for a large project and we have a Python script that runs <code>INSERT</code> queries into a Database Cluster. </p>
  
  <p>While testing the script, on the developer laptops (MacOSX), it works perfectly and performs all INSERTs without a problem.</p>
  
  <p>Every time it runs in production machines (Linux), it always has a:</p>
  
  <p><code>cassandra.OperationTimedOut: errors={}, last_host=cassandra1.example.com
  </code></p>
  
  <p>We are using the <a href="https://github.com/datastax/python-driver" rel="nofollow">DataStax Python Driver</a> and use more than one hosts (cassandra1.example.com and cassandra2.example.com) when creating the cluster. </p>
  
  <p>Both computers have the same kind and level of access in terms of networks (no firewall, etc.). The production servers have 4 ms ping with the database while the developer laptops average at 40-50.</p>
  
  <p>Any ideas what seems to be the problem?</p>