Hadoop Interview Questions for experienced and freshers


Real Time Hadoop Interview Questions from Various interviews Hive – Where do you use Internal or Managed table? What scenarios? In your resume, what do you mean by, “monitoring & managing MapReduce jobs”? Explain? Interviewer’s Project: How to modify the RDBMs’ Nested SQL queries into Hadoop framework using Pig. Sqoop: […]

Real Time Hadoop Interview Questions From Different Readers



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1. What does commodity Hardware in Hadoop world mean? ( D ) a) Very cheap hardware b) Industry standard hardware c) Discarded hardware d) Low specifications Industry grade hardware 2. Which of the following are NOT big data problem(s)? ( D) a) Parsing 5 MB XML file every 5 minutes […]

100 Interview Questions on Hadoop



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Below are some of the hadoop interview questions and answers. 1. As the data is replicated thrice in HDFS, does it mean that any calculation done on one node will also be replicated on the other two? Since there are 3 nodes, when we send the MapReduce programs, calculations will […]

Hadoop Interview Questions and Answers Part – 5


Below are a few more hadoop interview questions and answers for freshers and experienced hadoop developers. Hadoop Interview questions and answers 1.  What is the default block size in HDFS ? As of Hadoop-2.4.0 release, the default block size in HDFS is 256 MB and prior to that it was […]

Hadoop Interview Questions and Answers Part – 4


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Below are a few more hadoop interview questions and answers for both freshers and experienced hadoop developers and administrators. Hadoop Interview questions and answers 1.  What is a Backup Node? It is an extended checkpoint node that performs checkpointing and also supports online streaming of file system edits. It maintains […]

Hadoop Interview Questions and Answers Part – 3



Below are a few more Hadoop Interview Questions and Answers. Please refer previous posts on this topic for additional questions on HDFS. Hadoop Interview Questions and Answers 1.  What is HDFS ?  HDFS is a distributed file system implemented on Hadoop’s framework. It is a block-structured distributed file system designed […]

Hadoop Interview Questions and Answers Part – 2


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Below are a few hadoop interview questions for both hadoop developers and administrators. Hadoop Interview Questions and Answers 1.  What is Big Data ? Big data is vast amount of data (generally in GBs or TBs of size) that exceeds the regular processing capacity of the traditional computing servers and requires special […]

Hadoop Interview Questions Part – 1