Hadoop Interview Questions and Answers
If you wish to learn more about Hadoop and want to pursue it as a career, we have prepared a list of the most frequently asked Hadoop Interview Questions. This will help you in gaining more knowledge on the subject and cracking a job interview requiring Hadoop as a significant skill.
Hadoop is a general-purpose networking system that allows users to process large amounts of data through a set of distributed nodes. In addition to that, Hadoop is a multi-tasking system capable of handling multiple data sets for numerous jobs and users at the same time.
Most Frequently Asked Hadoop Interview Questions
Q11. How to recover a NameNode when it is down?
Answer
Q12. What is rack awareness in Hadoop?
Answer
Q13. What is SequenceFileInputFormat? For what it is used in Hadoop?
Answer
Q14. What is the port number for NameNode, Task Tracker and Job Tracker?
Answer
Q15. What is YARN and explain its components?
Answer
Q16. What is the purpose of RecordReader in Hadoop?x
Answer
Q17. What is the difference between an RDBMS and Hadoop?
Answer