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 the difference between an hdfs block and input split?

1 90

Explain hdfs?

1 74

Explain the key features of hdfs?

1 50

How does hdfs get a good throughput?

1 82

Explain how indexing is done in hdfs?

1 62

Explain the difference between mapreduce engine and hdfs cluster?

1 171

Explain the difference between an hdfs block and input split?

1 76

Explain what is big data?

1 609

Give some examples of big data?

1 559

Give a detailed overview about the big data being generated by facebook?

1 567

What are the three characteristics of big data according to ibm?

1 547

Explain how big is ‘big data’?

1 602

What do you know about sequencefileinputformat?

1 675

Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?

1 678

Why the name ‘hadoop’?

1 672

Un-Answered Questions { Big Data }

State some DDL Command with brief Description?

What is meant by Transformation? Give some examples.

328

How can you set an arbitrary number of Reducers to be created for a job in Hadoop?

518

What is the roadmap for apache driver version one.0?

How you can contact your client everyday ?

1013

What are the different types of tables available in Hive?

745

Can We Change settings within Hive Session? If Yes, How?

836

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

517

What is the roadmap for apache mahout version 1.0?

Where does the data of a Hive table gets stored?

718

did you maintain the hadoop cluster in-house or used hadoop in the cloud?

1059

When we are using queries instead of scripting?

778

When to choose "External Table" in Hive?

847

Explain how RDDs work with Scala in Spark

355

How can I delete the above index named index_bonuspay?

777

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