Week 2 HDFS: Fundamentals Week 3 MapReduce: Fundamentals MapReduce: mrjob Week 4 MapReduce: Practice Week 5 Spark: Fundamentals Spark: RDDs & PySpark Week 6 Spark: DataFrames Spark: SQL & Advanced DataFrame Ops Week 7 Hive: SQL on Hadoop Hive Optimization & Apache Pig Week 10 Redis — Key-Value at Speed MongoDB — Documents, Queries, and Aggregation Week 11 Cassandra — Built for When It Must Not Go Down Query-First Design and the NoSQL Decision Week 12 Kafka: The Commit Log Kafka in Practice Week 13 Apache Flink