Top 50 Apache Hadoop Interview Questions and Answers

by Knowledge Powerhouse

Apache Hadoop Interview Questions Do you want to make career in Data science and Data warehouse in Big Data technology? Apache Hadoop is an essential part of Big Data systems. For a career in Data Science, Data Analytics and Data Warehousing, good knowledge of Hadoop is required. Your career in Data science, Data analytics and Data warehouse can get a boost with the knowledge of Apache Hadoop. This book contains Apache Hadoop Technical interview questions that you can expect in a Technical interview. Apache Hadoop is a very important topic in technical interview. Many fortune 500 organizations use Apache Hadoop. This book contains basic to expert level Apache Hadoop interview questions that an interviewer asks. Each question is accompanied with an answer so that you can prepare for job interview in short time. Often, these questions and concepts are used in our daily programming work. But these are most helpful when an Interviewer is trying to test your deep knowledge of Apache Hadoop concepts. How will this book help me? By reading this book, you do not have to spend time searching the Internet for Apache Hadoop interview questions. We have already compiled the list of the most popular and the latest Apache Hadoop Interview questions. Are there answers in this book? Yes, in this book each question is followed by an answer. So you can save time in interview preparation. What is the best way of reading this book? You have to first do a slow reading of all the questions in this book. Once you go through them in the first pass, mark the questions that you could not answer by yourself. Then, in second pass go through only the difficult questions. After going through this book 2-3 times, you will be well prepared to face a technical interview for Software Engineer position in Apache Hadoop. What is the level of questions in this book? This book contains questions that are good for a Associate Software engineer to a Principal Software engineer. The difficulty level of question varies in the book from a Fresher to an Experienced professional. What are the sample questions in this book? What are the four Vs of Big Data? What is the difference between Structured and Unstructured Big Data? What are the main components of a Hadoop Application? What is the core concept behind Apache Hadoop framework? What is Hadoop Streaming? What is the difference between NameNode, Backup Node and Checkpoint NameNode in HDFS? What is the optimum hardware configuration to run Apache Hadoop? What do you know about Block and Block scanner in HDFS? What are the default port numbers on which Name Node, Job Tracker and Task Tracker run in Hadoop? How will you disable a Block Scanner on HDFS DataNode? How will you get the distance between two nodes in Apache Hadoop? Why do we use commodity hardware in Hadoop? How does inter cluster data copying works in Hadoop? How can we update a file at an arbitrary location in HDFS? What is Replication factor in HDFS, and how can we set

47 pages, Kindle Edition

Published December 30, 2016