How to access Deequ with Apache Spark Stack AMI?

URL: http://instance-public-ipv4:8888/

Connect to the PostgreSQL database:
sudo -i -u postgres
psql

To launch the Spark shell with Deequ pre-configured:
spark-shell

Shell/Terminal
sudo chmod 400 yourpemkeyname.pem
ssh -i yourpemkeyname.pem ubuntu@yourinstanceip