title: What is apache zeppelin?
body: <p>As we are hearing often about <code>apache zeppelin</code>, So few questions comes to our mind:</p>
  
  <ol>
  <li>What is Apache zeppelin?</li>
  <li>What new and/or extra it is adding to Big data ecosystem?</li>
  <li>Is it a replacement of some of the framework(s)/tool(s) already
  existing in Big data ecosystem?</li>
  </ol>