title: Hadoop namenode not starting with exit code 1
body: <pre><code>prateek@prateek:~$ start-dfs.sh
  Starting namenodes on [localhost]
  pdsh@prateek: localhost: ssh exited with exit code 1
  Starting datanodes
  Starting secondary namenodes [prateek]
  prateek@prateek:~$ jps
  11011 SecondaryNameNode
  10787 DataNode
  11161 Jps
  prateek@prateek:~$ 
  </code></pre>
  
  <p>it starts some times but mostly throws error. formatted namenode also.</p>