bigdata - Hadoop two node cluster environment, NameNode’s web UI displays the number of live nodes as one and Dead nodes as zero -

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I have correctly configured two node cluster environments for the head, and also the master is also configured for data. So, I currently have two data nodes, without any issues, I am able to start all the services in the master. Slave detonodes may stop starting from the master node. But when I type the URL http: // live node counting, I'm not seeing only one two.

Master Process: 

  ~ / hadoop-1.2.0 $ jps 9112 Task Tracker 8805 Secondary Nomen 929 GPS 8579 Detanode 8887 JobTracker 8358 NameNode  < / Pre> 
 Slave process:  
  ~ / hadoop-1.2.0 $ jps 18130 data node 18380 jps18319 tasktracker   
 Please let me know this Help me in what I am doing.  
  
 
 
 The second datanode is running but is not connected to NameNode is likely that you can reformat NameNode again And now there are different version numbers in NameNode and DataNode.  
 Manually delete a directory, where Datanet keeps its data (dfs.datanode.data.dir) and then reformats NameNode. Editing a version is very low manually, but for study purposes you can skip the entire directory.

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