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

Big Data Interview Questions

Questions Answers Views Company eMail

How is big data analysis helpful in increasing business revenue?

572

Can you define a combiner?

558

Can you explain the core methods of a reducer?

552

Can you define taskinstance?

585

Explain the responsibilities of a data analyst?

590

Explain how do “reducers” communicate with each other?

556

Can you define big data analytics?

588

How do big data solutions interact with the existing enterprise infrastructure?

524

What are the important tools useful for big data?

612

Can you define data lake?

553

Can you define a udf?

603

Why big data use?

611

Can you define oozie?

578

Can you explain ingestion in big data?

610

What is difference the between sqoop and distcp?

Un-Answered Questions { Big Data }

What roles do Replicas and the ISR play?

601

What are the essential hooping tools that improve performance? Big data?

693

Mention what is the difference between an rdbms and hadoop?

476

Does Pig differ from MapReduce? If yes, how?

650

What problems have you faced when you are working on Hadoop code?

1025

Whenever we run hive query, new metastore_db is created. Why?

735

You have a file personal_data.txt in the HDFS directory with 100 records. You want to see only the first 5 records from the employee.txt file. How will you do this?

840

How is it completely different from doing machine learning in r or sas?

What is Purpose to Validate in Sqoop?

In Map Reduce why map write output to Local Disk instead of HDFS?

957

Define a datanode?

694

Why Hadoop performs replication, although it results in data redundancy?

1326

What is the difference between an input split and hdfs block?

114

On what all basis can you differentiate rdd, dataframe, and dataset?

327

Have you ever used counters in hadoop?

465

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