I have tried with " sudo apt-get update" command which was a solution i found in some site. After this i have tried this command " sudo apt-get install openssh-server ". But this time i got different error saying that,

" You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
libc6 : Depends: libc-bin (= 2.12.1-0ubuntu6) but 2.12.1-0ubuntu10.2 is to be installed
libc6-dev : Depends: libc6 (= 2.12.1-0ubuntu10.2) but 2.12.1-0ubuntu6 is to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). "

So i have tried with "sudo apt-get -f install " so i got error that "Errors were encountered while processing:
/var/cache/apt/archives/libc6_2.12.1-0ubuntu10.2_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1) " .

Please help me how to install openssh-server.

Thank you very much.

Post the rest of the errors you got from "sudo apt-get -f install " and post the contents of your /etc/apt/sources.list

Thank you for your reply.

I have configured Hadoop for single node cluster and when l run these URL's http://localhost:50030/jobtracker.jsp ,http://localhost:50060/tasktracker.jsp ,http://localhost:50070/dfshealth.jsp
the web pages are opening, which means that Hadoop is configured.
I have followed " http://jwm.slavitica.net/p/projects/...ngle_Server%29 " for cofiguring hadoop single node cluster.

Now i want to install HBASE for this.So when i tried the command to install Hbase " sudo /usr/lib/hbase/bin/start-hbase.sh " I got an error that " hadoop is not in the sudoers file. This incident will be reported. "
So i changed the authentication of Hadoop to Administrator. But now when iam trying to execute the " sudo /usr/lib/hbase/bin/start-hbase.sh " command its is asking for " root@localhost's password: " .
Iam following " http://ria101.wordpress.com/2010/01/...t-java-client/ " to install HBASE for Hadoop single node cluster.

So please help me to install Hbase for single node cluster or else please please tell me whether i have gone wrong somewhere...

Thanks in advance.