My Ubuntu version is 16.04.
Am getting password prompt for root@localhost during the execution of command "sudo start-dfs.sh" from hduser, it is prompting password for root@localhost so i have given main user password but didn't work.
Then i changed the root password (sudo -i) and again tried to connect the localhost using the below command (from root) with new root password but no luck. ssh root@localhost
can anyone suggest the solution please?