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 difference between secondary namenode, checkpoint namenode & backupnode?

467

Name the most common input formats defined in hadoop?

443

Which one is default?

483

Is it possible to have hadoop job output in multiple directories?

444

What is tasktracker in hadoop?

428

What is a combiner in hadoop?

510

Have you ever used counters in hadoop?

421

What are some typical functions of job tracker in hadoop?

418

Can you define inputsplit in hadoop?

468

What daemons run on master nodes?

485

Can you explain rack awareness?

433

Can you explain record reader?

431

What are the side effects of not running a secondary name node?

448

What are the main components of hadoop?

432

What do you understand by unit and ()in scala?

492

Un-Answered Questions { Big Data }

Name the examples of some companies that are using hadoop structure?

689

What is executor in spark?

306

How to create RDD?

497

Does Apache Sqoop have a default database?

What are roles in cqlsh?

Define “speculative execution” in hadoop?

424

What is SequenceFileInputFormat?

814

What is flume and sqoop?

107

What is Geo-Replication in Kafka?

869

How to write 'foreach' statement for tuple datatype in pig scripts?

610

For a Hadoop job, how will you write a custom partitioner?

651

Explain Cqlsh?

What is action, how it process data in apache spark

335

what are the values stored in the cassandra column?

Can you explain rack awareness?

433

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