This list of Hadoop interview questions has been prepared with extensive inputs from industry experts to give you a clear advantage in your job interview. You will understand what Hadoop applications are, how Hadoop is different from other parallel processing engines, Hadoop running modes, NameNode, DataNode, JobTracker, TaskTracker, debugging Hadoop code, and more. Top Answers to Hadoop Interview Questions 1. What are the differences between Hadoop and Spark? Criteria Hadoop Spark Dedicated storage HDFS None Speed of processing Average Excellent Libraries Separate tools available Spark Core, SQL, Streaming, MLlib, and GraphX 2. What are the real-time industry applications of Hadoop?
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