Hadoop General Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Hadoop General Interview Questions

Questions Answers Views Company eMail

Mention what is distributed cache in hadoop?

440

Explain how can you debug hadoop code?

466

Explain how can you check whether namenode is working beside using the jps command?

431

Explain what is webdav in hadoop?

508

Mention what job does the conf class do?

422

For using hadoop list the network requirements?

471

Mention what is data cleansing?

436

What is a udf?

448

What is a record reader?

407

List out the different stream grouping in apache storm?

383

List out the some common problems faced by data analyst?

410

Why cloudera is used?

476

What are the benefits yarn brings in to hadoop?

423

Define “speculative execution” in hadoop?

424

What are the port numbers of job tracker?

525

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Un-Answered Questions { Hadoop General }

Define “speculative execution” in hadoop?

424

What is LazyOutputFormat in Hadoop?

496

Can you define inputsplit in hadoop?

468

When and how to create hadoop archive?

444

What is the logistic regression?

436

Which directory does hadoop install to?

485

Do we require two servers for the namenode and the datanodes?

527

Explain what happens when hadoop spawned 50 tasks for a job and one of the task failed?

439

What is TextInputFormat in Hadoop?

517

What is a commodity hardware? Does commodity hardware include RAM?

515

Can you give a detailed overview about the Big Data being generated by Facebook?

432

What are the network requirements for hadoop?

474

Is hadoop still in demand?

447

What happens if one hadoop client renames a file or a directory containing this file while another client is still writing into it?

444

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

453

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