Start YARN/MapReduce Services

To start YARN, run commands as a YARN user. To start MapReduce, run commands as a MapReduce user.

	Note
	The `su` commands in this section use "yarn" to represent the YARN Service user and mapreduce to represent the MAPREDUCE Service user. If you are using another name for these Service users, you need to substitute your Service user name for "yarn" or "mapreduce" in each of the `su` commands.

Manually clear the ResourceManager state store.

su - yarn -c "yarn resourcemanager -format-state-store"

Start the ResourceManager on all your ResourceManager hosts.

su - yarn -c "/usr/hdp/current/hadoop-yarn-resourcemanager/sbin/yarn-daemon.sh start resourcemanager" 
                
ps -ef | grep -i resourcemanager

Start the TimelineServer on your TimelineServer host.

su - yarn -c "/usr/hdp/current/hadoop-yarn-timelineserver/sbin/yarn-daemon.sh start timelineserver"
                
ps -ef | grep -i timelineserver

Start the NodeManager on all your NodeManager hosts.

su - yarn -c "/usr/hdp/current/hadoop-yarn-nodemanager/sbin/yarn-daemon.sh start nodemanager"
                
ps -ef | grep -i nodemanager

To start MapReduce, run the following commands:

su - mapred -c "/usr/hdp/current/hadoop-mapreduce-historyserver/sbin/mr-jobhistory-daemon.sh start historyserver"
                
ps -ef | grep -i jobhistoryserver

​Start YARN/MapReduce Services

Start YARN/MapReduce Services