Spark streaming example

[spicoflorin]

Hello! I have read your excellent material on the lab8. I have appreciated the pictures that you have added explaining the partitioning of the data across the worker nodes. I found them very helpful for understanding what is happening behind the scene with the RDD. It would be great if you can add more examples like this for the spark streaming (with pictures and data flowing between the nodes and DAG). Thank you. Regards, Florin