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

Hadoop General Interview Questions

Questions Answers Views Company eMail

What do you understand by a closure in scala?

450

Can you explain textinformat?

462

List some use cases where classification machine learning algorithms can be used.

422

How many daemon processes run on a hadoop cluster?

427

Which scala library is used for functional programming?

414

Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?

441

Which operating system(s) are supported for production hadoop deployment?

400

Can you explain speculative execution?

393

How do you overwrite replication factor?

413

Can you explain logistic regression?

380

Can you explain combiner?

403

List of some best tools that can be useful for data-analysis?

385

What is the best practice to deploy the secondary name node?

418

What are the tools used in big data?

397

Can you explain indexing?

384

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Un-Answered Questions { Hadoop General }

Can you define udf?

396

How often do you need to reformat the namenode?

476

What is heartbeat in hadoop?

395

What are configuration files in Hadoop?

475

What is the difference between TextInputFormat and KeyValueInputFormat class?

457

After increasing the replication level, I still see that data is under replicated. What could be wrong?

423

is there a standard procedure to deploy hadoop?

390

How analysis of Big Data is useful for organizations?

426

Mention what is distributed cache in hadoop?

402

Can you define a checkpoint?

432

What are the hadoop configuration files at present?

428

Explain what is storage and compute nodes?

476

Explain some important features of hadoop?

415

What do you understand by a closure in scala?

450

What is a record reader?

378

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