title: error in namenode starting
body: <p>When i try to start the hadoop on master node i am getting the following output.and the namenode is not starting.</p>
  
  <pre><code>[hduser@dellnode1 ~]$ start-dfs.sh
  starting namenode, logging to /usr/local/hadoop/bin/../logs/hadoop-hduser-namenode-dellnode1.library.out
  dellnode1.library: datanode running as process 5123. Stop it first.
  dellnode3.library: datanode running as process 4072. Stop it first.
  dellnode2.library: datanode running as process 4670. Stop it first.
  dellnode1.library: secondarynamenode running as process 5234. Stop it first.
  [hduser@dellnode1 ~]$ jps
  5696 Jps
  5123 DataNode
  5234 SecondaryNameNode
  </code></pre>