title: Cassandra Materialized views impact
body: <ol>
  <li>Would like to know impact of mv on base table. Does it slows down base table?  When does it starts writing to mv like does it write to base table and mv same time?</li>
  <li>If I have CL of local_quorum and RF=3 does the client has to wait till it write to mv to get the ack.</li>
  <li>what kind of lock involved in base table and mv does it impacts the latencies on base table</li>
  </ol>