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> /etc/hosts Then run the command vi /etc/hosts and exit the file by pressing the button Esc and then enter :wq then press enter. Step 3: type the following commands to start hadoop: Command- ssh-keygen -t rsa -P "" This command is used to generate the ssh key. You just have to press Enter button where it asks you in which file to save the key. Command- cat $HOME/.ssh/id_rsa.pub >> $HOME/.ssh/authorized_keys This command is used to move the generated ssh key to the desired location Command- hdfs namenode –formatCommand- start-all.sh You have to write “yes” when it prompts you – Are you sure you want to continue? Step 4: After the above command executes successfully, you should check the below url in the browser - http://:8088Step 5: Use following Linux command to start h2o Command- cd /home/h2o-3.22.0.2 Command- java -jar h2o.jarStep 6: Open your browser and hit http://:54321 and enjoy h2o.">