title: Hadoop HDFS start up fails requires formatting
body: <p>I have a multi-node standalone hadoop cluster for HDFS. I am able to load data to HDFS, however everytime I reboot my computer and start the cluster by <code>start-dfs.sh</code>, I don't see the dashboard until I perform <code>hdfs namenode -format</code> which erases all my data.
  How do I start hadoop cluster without having to go through <code>hdfs namenode -format</code>?</p>