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

I Have applied some mixed configuration, and its worked for me.
First >>
Stop Hadoop all Services using ${HADOOP_HOME}/sbin/stop-all.sh

Second >>
Check mapred-site.xml which is located at your ${HADOOP_HOME}/etc/hadoop/mapred-site.xml and change the localhost to master.

Third >>
Remove the temporary folder created by hadoop
rm -rf //path//to//your//hadoop//temp//folder

Fourth >>
Add the recursive permission on temp.
sudo chmod -R 777 //path//to//your//hadoop//temp//folder

Fifth >>
Now Start all the services again. And First check that all service including datanode is running. enter image description here