title: Spark-shell meaning of displayed Number on Stage
body: <pre><code>[Stage 5:=====&gt;  (26372 + 264) / 27840] 
  
  [stage 6:=========&gt; (0 + 200 ) / 200 ] 
  </code></pre>
  
  <p>Hi, I'm using spark 1.6.1. </p>
  
  <p>I use spark-shell to see the data and i want to know the meaning of each number here. </p>
  
  <pre><code>( A + B / C ) 
  </code></pre>