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 are the different UDF’s in Pig?

1 695

What is Apache Hadoop? Why is Hadoop essential for every Big Data application?

1 977

What are the core components of Apache Hadoop?

1 835

What is the difference between Apache Hadoop and RDBMS?

1 862

How is security achieved in Apache Hadoop?

1 970

What is Apache Hadoop?

1 909

What is a “Distributed Cache” in Apache Hadoop?

1 835

What is the problem with small files in Apache Hadoop?

1 846

What is Rack Awareness in Apache Hadoop?

1 865

Explain Erasure Coding in Apache Hadoop?

1 824

What is Disk Balancer in Apache Hadoop?

1 961

What is a speculative execution in Apache Hadoop MapReduce?

1 843

What are the modes in which Apache Hadoop run?

1 850

What is Safemode in Apache Hadoop?

1 791

What are the different methods to run Spark over Apache Hadoop?

1 774

Un-Answered Questions { Big Data }

What is the stable version of Hive ?

2673

How can you import only a subset of rows from a table?

Explain how RDDs work with Scala in Spark

355

What is the function of UNION and SPLIT operators? Give examples?

578

What is a Hive variable? What for we use it?

854

What is the latest version of sqoop?

Can free-form SQL queries be used with Sqoop import command? If yes, then how can they be used?

When we are using queries instead of scripting?

778

What is the latest version of ambari that is available in the present market?

How do I set up flume agent?

What is the latest version of spark?

288

How to skip header rows from a table in Hive?

872

Where does the data of a Hive table gets stored?

718

Which modes can Hadoop be run in? List a few features for each mode?

517

List the advantage of Parquet file in Apache Spark?

474

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