title: Is Namenode format in pseudo distribution mode is necessary everytime
body: <p>For the pseudo distribution mode in <strong>Hadoop 2.6.0</strong> do we have to format namenode everytime.</p>
  
  <p>I am using hadoop 2.6.0 at my home but every time i use start-dfs.sh and start-yarn.sh i have to format my namenode.</p>
  
  <p>Is there is any other way to implement for avoiding this? Plz suggest me something to get out of this!!</p>