hi Chitra,

Open Firefox in the VM, click on the "Cloudera manager" on the bookmarks menu. login with creds (cloudera/cloudera). Once logged in you will be taken to "All services" page. Here check the status of HDFS, if its stopped, select "restart" from the drop down menu.

Thanks for your response.

My "Cloudera manager" is not coming up. That is the main issue. If it comes up then I can try other options.

Is there contact number to reach out to support?

Thanks
Chitra

Regards
Chitra

CloudEra Manager issue has been resolved.

Now I am not able to execute hadoop commands. please see below:

[cloudera@localhost ~]$ hadoop jar class3.jar com.eng.demo.MaxTemp /user/cloudera/class3/mt-input /user/cloudera/class3/mt-output-1
Exception in thread "main" java.lang.NoClassDefFoundError: ”-Djava/net/preferIPv4Stack=true”
Caused by: java.lang.ClassNotFoundException: ”-Djava.net.preferIPv4Stack=true”
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class: ”-Djava.net.preferIPv4Stack=true”. Program will exit.
[cloudera@localhost ~]$ hadoop fs -put data1.txt /user/cloudera/class3/wc-input
Exception in thread "main" java.lang.NoClassDefFoundError: ”-Djava/net/preferIPv4Stack=true”
Caused by: java.lang.ClassNotFoundException: ”-Djava.net.preferIPv4Stack=true”
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

Any quick response will be appreciated.
Thanks
Chitra