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

Big Data Interview Questions

Questions Answers Views Company eMail

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

469

How analysis of Big Data is useful for organizations?

460

What does the file hadoop-metrics.properties do?

486

Hadoop achieves parallelism by dividing the tasks across many nodes, it is possible for a few slow nodes to rate-limit the rest of the program and slow down the program. What mechanism Hadoop provides to combat this?

456

How will you write a custom partitioner for a Hadoop job?

455

Give me the examples of Columnar database ?

586

What are 'slaves' and 'masters' in Hadoop?

419

What is Fault Tolerance?

533

What is the basic difference between traditional RDBMS and Hadoop?

443

What are the common types of NOSQL data bases ?

445

Is it possible to provide multiple input to Hadoop? If yes then how can you give multiple directories as input to the Hadoop job?

431

How does speculative execution work in Hadoop?

436

What is Federation?

416

What is the difference between TextInputFormat and KeyValueInputFormat class?

501

What is High Availability feature in Hadoop2?

440

Un-Answered Questions { Big Data }

What is having clause in apache tajo?

What is kafka logs?

572

What is the heartbeat used for?

1045

How can you store the data in spark?

322

What are the usage of different consistency levels for write operations ?

Why are Replications critical in Kafka?

572

List out the ways of creating RDD in Apache Spark?

289

Is it possible to use same metastore by multiple users, in case of embedded hive?

659

Why is block size large in Hadoop?

What is the meaning of speculative execution in Hadoop? Why is it important?

1059

Is hadoop open source?

719

Explain the flatMap() transformation in Apache Spark?

310

What is job tracker in Hadoop?

500

What is Client API?

281

How do I achieve fifo behavior with kafka?

530

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