Big Data Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Big Data Interview Questions

Questions Answers Views Company eMail

What is commodity hardware?

624

Explain what is sqoop in Hadoop ?

694

Explain how do ‘map’ and ‘reduce’ works?

703

Explain what is the purpose of RecordReader in Hadoop?

717

How to restart Namenode?

711

Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?

732

Mention what are the data components used by Hadoop?

630

What does /etc /init.d do?

671

What is a Combiner?

699

Main Components of Hadoop?

738

What are the four characteristics of Big Data?

673

Mention what is the number of default partitioner in Hadoop?

653

Explain what happens in textinformat ?

716

Explain the rudimentary difference between Cassandra and HBase?

Is HDFS utilized in Cassandra? If yes, where?

Un-Answered Questions { Big Data }

What is the latest version of ambari that is available in the market and what is the feature that they have added in it?

Explain what is the row key?

146

What are the configuration parameters in the 'MapReduce' program?

641

Explain the role of offset in kafka?

483

Explain the core benefits for hadoop users by using the apache ambari?

Where does spark plug get power?

271

What do you mean by commit log in Cassandra?

What is the problem with the small file in Hadoop?

613

Define role of value in big data?

601

Which database the sqoop metastore runs on?

What is TextInputFormat in Hadoop?

486

Explain textloader function?

612

When is it suggested to use a combiner in a MapReduce job?

593

What are the main components in Hadoop Eco-System and what are their functions ?

471

Which method is used to access HFile directly without using HBase?

203

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