Hi Sachin,

Its hard to explain the reason.

Please share your 2 recent datanode logs with me and namenode UI snapshot.
Thanks.

Hi Abhijit - Pls find the attached requested information.

What I did today was deleted my virtual machine and re installed everything again and still no luck.

The moment I go to Browse  File System from my namenode 192.168.230.128:50070

and click in usr folder OR data folder .. my datanode dies. and I get the error which I gave in my initial e mail.

I need this to be fixed as I am not able to make any progress in terms of classes and execute anything. Quick response is much appreciated as I need to get this done before the class in the evening. 

NameNode Screenshot are attached in this

NameNode Screenshot

Hi Sachin,

It happened because of leftover metadata. To resolve it, please do the following:

1. Stop all the services -

$ stop-all.sh

2. Power-off the machine.

3. Delete the HDFS  -

$ sudo rm -r /usr/local/hadoop/hdfs

4. Create a HDFS -

$ sudo mkdir /usr/local/hadoop/hdfs

5. Assign ownership permission -

$ sudo chown hadoop /usr/local/hadoop/hdfs
$ sudo chmod 755 /usr/local/hadoop/hdfs

6. Format the namenode -

$ hadoop namenode -format

7. Start the hadoop services -

$ start-all.sh

Hope this helps.

Thanks.