What is Hadoop? Name the Main Components of a Hadoop Application.Īnswer: Hadoop is what evolved as the solution to the “Big Data” problem. Preparing for MapReduce Interview? Here’ re the 10 Most Popular MapReduce Interview Questions 2. And then the reduce job takes the output of the map job and combines the data tuples into a smaller set of tuples. The map job breaks down the data set into key-value pairs or tuples. The Hadoop jobs are basically divided into two different tasks job. MapReduce: This is the programming model and the associated implementation for processing and generating large data sets.HDFS itself works on the Master-Slave Architecture and stores all its data in the form of blocks. HDFS: Abbreviation for Hadoop Distributed File System, it is a Java-based file system for scalable and reliable storage of large datasets.What are the concepts used in the Hadoop Framework?Īnswer: The Hadoop Framework functions on two core concepts: To start off the list, we will be focusing on the common and basic Hadoop Interview Questions that people come across when applying for a Hadoop related job, irrespective of position. Preparing through these Hadoop Interview Questions will undoubtedly give you an edge over the competition. These are the most common and popularly asked Big Data Hadoop Interview Questions which you are bound to face in big data interviews. So without further delay, we present Top 50 Hadoop Interview Questions and Answers that will help you to crack the interview. One out of every five big companies is moving to Big Data Analytics, and hence it is high time to start applying for jobs in this field. So the interviewer will ask you some specific big data interview questions they think are apt to judge your knowledge in the subject matter.Įnroll Now: Hadoop Basics Online Training Course Top 50 Hadoop Interview Questions and AnswersĬurrently, jobs related to Big Data are on the rise. You might have sound knowledge regarding the software framework, but all of it can’t be tested in a short 15 minutes interview session. We have put together a list of Hadoop Interview Questions that will come in handy. Are you planning to land a job in big data and data analytics? Are you worried about cracking the Hadoop job interview?
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