title: hadoop namenode is not formatting
body: <p>Here I am facing very strange issue in Ubuntu 12.04 Server, 64 Bit version. I installed java 7 JDK manually (Copy-pasted the jdk folder in /usr/lib/jvm and done lots of configuration to manage the java, javac and jps commands working properly). 
  When formatting the name node by-</p>
  
  <pre><code>hadoop namenode -format
  </code></pre>
  
  <p>my shell shows:</p>
  
  <pre><code>$HADOOP_HOME is deprecated
  </code></pre>
  
  <p>and then suddenly returns to shell without formatting the namenode.
  Also after starting the hadoop daemons by:</p>
  
  <pre><code>start-all.sh
  </code></pre>
  
  <p>they start by showing below message:</p>
  
  <pre><code>Warning: $HADOOP_HOME is deprecated.
  
  starting namenode, logging to /usr/local/hadoop-1.2.1/libexec/../logs/hadoop-ubuntu1-namenode-jci1.out
  jci1: starting datanode, logging to /usr/local/hadoop-1.2.1/libexec/../logs/hadoop-ubuntu1-datanode-jci1.out
  jci1: starting secondarynamenode, logging to /usr/local/hadoop-1.2.1/libexec/../logs/hadoop-ubuntu1-secondarynamenode-jci1.out
  starting jobtracker, logging to /usr/local/hadoop-1.2.1/libexec/../logs/hadoop-ubuntu1-jobtracker-jci1.out
  jci1: starting tasktracker, logging to /usr/local/hadoop-1.2.1/libexec/../logs/hadoop-ubuntu1-tasktracker-jci1.out
  </code></pre>
  
  <p>but when I try to see the processes by "jps" the output is like:</p>
  
  <pre><code>9351 -- main class information unavailable
  9184 -- main class information unavailable
  9520 -- main class information unavailable
  9612 -- process information unavailable
  9831 Jps
  </code></pre>
  
  <p>and after some time the jps shows only jps process:</p>
  
  <pre><code>9831 Jps
  </code></pre>
  
  <p>I am unable to figure-out why daemons are stopping just after start. Is it java issue?
  Please give me advice what should I do to sort it out.</p>