Datanode process not running in Hadoop

Question

I set up and configured a multi-node Hadoop cluster using this tutorial.

When I type in the start-all.sh command, it shows all the processes initializing properly as

Answer 1

Run Below Commands in Line:-

1. stop-all.sh (Run Stop All to Stop all the hadoop process)
2. rm -r /usr/local/hadoop/tmp/ (Your Hadoop tmp directory which you configured in hadoop/conf/core-site.xml)
3. sudo mkdir /usr/local/hadoop/tmp (Make the same directory again)
4. hadoop namenode -format (Format your namenode)
5. start-all.sh (Run Start All to start all the hadoop process)
6. JPS (It will show the running processes)