title: Job history server in Hadoop 2.7.1 is not working
body: <p>I explored everywhere but could not get the solution. When I do run <code>jps</code> command it does not show job history server running.</p>
  
  <p>What are configuration settings for history server and how to start this?</p>
  
  <p>EDIT 1:</p>
  
  <p>When history server is stopped, all previously recorded information of jobs is deleted. How to retain all those information after cluster and/or history server is restarted? </p>