Tech Mahindra– Hadoop Interview Questions

Here is the list of Hadoop Interview Questions which are recently asked in Tech Mahindra company. These questions are included for both Freshers and Experienced professionals.

  1. What are the differences between Hadoop and Spark?
  2.  What are the real-time industry applications of Hadoop?
  3. How is Hadoop different from other parallel computing systems?
  4. In what all modes Hadoop can be run?
  5. Explain the major difference between HDFS block and InputSplit.
  6. What is distributed cache? What are its benefits?
  7. Explain the difference between NameNode, Checkpoint NameNode, and Backup Node.
    8. Free PDF : Get our updated Hadoop Course Content pdf
  8. What are the most common input formats in Hadoop?
  9. Define DataNode. How does NameNode tackle DataNode failures?
  10. What are the core methods of a Reducer?
  11. What is a SequenceFile in Hadoop?
  12. What is the role of a JobTracker in Hadoop?
  13. What is the use of RecordReader in Hadoop?
  14. What is Speculative Execution in Hadoop?
  15. How can you debug Hadoop code?
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TOP MNC's HADOOP INTERVIEW QUESTIONS & ANSWERS

Here we listed all Hadoop Interview Questions and Answers which are asked in Top MNCs. Periodically we update this page with recently asked Questions, please do visit our page often and be updated in Hadoop .