python -m pip install opencv-python


#6 list eroor

sudo service zookeeper-server status
sudo service hbase-master status
sudo service hbase-regionserver status


sudo service zookeeper-server start
sudo service hbase-master start
sudo service hbase-regionserver start


Method 2: Restart all services using Cloudera Manager
If your Cloudera Manager web interface is accessible:
1. Open http://quickstart.cloudera:7180.
2. Sign in.
3. Open the cluster's Actions menu.
4. Choose Restart if available.