Dear Venkat.

Hope you are doing well.

Please follow the steps given below:

1) Go to the Namenode and start dfs daemons:

start-dfs.sh

2) Make sure that ssh login is working from namenode to jobtracker node

ssh host_name_of_jobtracker_node


3) Now go to the Job tarcker Node and start the job tracker individually:
 
hadoop-daemon.sh start jobtracker

4) Go to the Namenode and start all tasktracker daemons:
 
hadoop-daemons.sh start tasktracker


Please let me know if you have any further issue regarding this query.

We are eagerly waiting for your reply.