title: cassandra.input.split.size is not reflecting in DSE3.2.4 Hadoop
body: <p>I am processing Cassandra tables using Hive in DSE3.2.4.
  Irrespective of the table size it is running 513 mappers for each job.
  I tried to change</p>
  
  <pre><code>cassandra.input.split.size 65536
  mapred.min.split.size 1000000
  </code></pre>
  
  <p>these are reflecting in Job.xml but no luck, </p>
  
  <p>tring changing <code>mapred.map.tasks to 4</code> is not reflecting in Job.xml, I know this won't reflect but just gave a try</p>
  
  <p>I still don't understand why this fancy Number 513?</p>