💡 DSU Exam Strategy & Guidance
Hadoop Ecosystem (HDFS, MapReduce), Apache Spark Architecture, RDD Transformations vs Actions, Spark SQL, and Spark Streaming.
High-Yield Passing Strategy: Explain Spark Master-Worker architecture, DAG execution engine, and write sample PySpark code for word count.
Most Repeated Question Topics:
Spark RDD (Transformations vs Actions & Lazy Evaluation)HDFS Architecture (NameNode, DataNode, Secondary NameNode)Spark SQL DataFrames & Optimization (Catalyst Optimizer)MapReduce WordCount Execution Flow