Question - How to restart all the daemons in Hadoop?
Answer -
To restart all the daemons, it is required to stop all the daemons first. The Hadoop directory contains sbin directory that stores the script files to stop and start daemons in Hadoop.
Use stop daemons command /sbin/stop-all.sh to stop all the daemons and then use /sin/start-all.sh command to start all the daemons again.