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?

Explain hdfs?

Explain the key features of hdfs?

How does hdfs get a good throughput?

Explain how indexing is done in hdfs?

Explain the difference between mapreduce engine and hdfs cluster?

130

Explain the difference between an hdfs block and input split?

Explain what is big data?

550

Give some examples of big data?

507

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

496

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

489

Explain how big is ‘big data’?

541

What do you know about sequencefileinputformat?

632

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

640

Why the name ‘hadoop’?

612

Un-Answered Questions { Big Data }

when hadoop enter in safe mode?

744

What is presto verifier?

What is the default extension of the files produced from a sqoop import using the –compress parameter?

What are the Binary Storage formats supported in Hive?

725

What is spark lineage?

302

What is pair rdd?

299

What is the role of Connector API?

553

What do you understand by the term data storage?

551

What is the problem in having lots of small files in hdfs?

Is spark an etl?

294

List down the segments of a hive question processor?

642

Explain how big is ‘big data’?

541

How would you diagnose or do exception handling in the pig?

971

Can you list few commonly used hive services?

657

Is apache spark part of hadoop?

300

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