I had the great opportunity to learn Big data technologies from Prasanna Sir. He explained concepts clearly so that a beginner like me can understand easily. He is always patient and never hesitant to explain the concept many times if needed and also makes sure that we understand it well. He covered various topics like Hadoop, Hive, sqoop, yarn, oozie, Spark. His real time experience has helped me to focus more on the important topics and also about the real time project environment setup. Thank you Prasanna sir for your guidance and support.