JobTracker is not yet RUNNING - Hadoop

Question

I am on a lab with 20 nodes and I am trying to run my Hadoop program but when I command "hadoop jar" I am always getting an Error **ERROR security.UserGroupInformation: PriviledgedActionException as:hduser cause:org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.mapred.JobTrackerNotYetInitializedException: JobTracker is not yet RUNNING**

-I am not a sudo-user.

-I cannot even run the WordCount example.

the jps gives me:

23712 JobTracker
25685 Jps
23504 NameNode

on the master node. I have searched a lot at Google but I found nothing except from some solutions which didn't solve my problem at all... Please can anyone help me? Ask me any information that you think it may be wrong...

Answer 1

Edit the /etc/hosts file of each of the nodes adding the IP address of each of them and a host name. For example:

168.168.255.1 node1
168.168.255.2 node2

Once this is done in all the nodes, you may need to restart all the services.