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?

659

Explain what is sqoop in Hadoop ?

725

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

736

Explain what is the purpose of RecordReader in Hadoop?

745

How to restart Namenode?

747

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

762

Mention what are the data components used by Hadoop?

659

What does /etc /init.d do?

700

What is a Combiner?

740

Main Components of Hadoop?

769

What are the four characteristics of Big Data?

715

Mention what is the number of default partitioner in Hadoop?

694

Explain what happens in textinformat ?

748

Explain the rudimentary difference between Cassandra and HBase?

Is HDFS utilized in Cassandra? If yes, where?

Un-Answered Questions { Big Data }

Explain the action count() in Spark RDD?

281

What is meant by Transformation? Give some examples.

305

Define sparksession in apache spark? Why is it needed?

275

How will you merge the contents of two or more relations and divide a single relation into two or more relations?

938

What is an accumulator in spark?

298

Apache Flume support third-party plugins also?

JMX stands for?

108

What is the significance of ‘IF EXISTS” clause while dropping a table?

715

Mention the common features in Pig and Hive?

917

What do you understand by composite type?

What is a cell in hbase?

179

State use cases of impala?

Give any two features of flume?

102

What is mllib?

279

How do we back up a hbase cluster?

138

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