Browse to the ResourceManager:

http://$resourcemanager.full.hostname:8088/

Create a $CLIENT_USER in all of the nodes and add it to the users group.

useradd client
usermod -a -G users client

As the HDFS user, create a /user/$CLIENT_USER.

sudo su - $HDFS_USER 
hdfs dfs -mkdir /user/$CLIENT_USER
hdfs dfs -chown $CLIENT_USER:$CLIENT_USER /user/$CLIENT_USER 
hdfs dfs -chmod -R 755 /user/$CLIENT_USER

Run the smoke test as the $CLIENT_USER. Using Terasort, sort 10GB of data.

su - $CLIENT_USER
/usr/hdp/current/hadoop-client/bin/hadoop jar /usr/hdp/current/hadoop-mapreduce-client/hadoop-mapreduce-examples-*.jar teragen 10000 tmp/teragenout
/usr/hdp/current/hadoop-client/bin/hadoop jar /usr/hdp/current/hadoop-mapreduce-client/hadoop-mapreduce-examples-*.jar terasort tmp/teragenout tmp/terasortout