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

Hadoop General Interview Questions

Questions Answers Views Company eMail

Can you define a checkpoint?

436

Which language is more suitable for text analytics? R or python?

411

Can you explain commodity hardware?

382

How can native libraries be included in yarn jobs?

446

How to do ‘map’ and ‘reduce’ works?

520

Can you explain bloommapfile.

431

Why is checkpointing important in hadoop?

442

What happens when two clients try to access the same file in the hdfs?

429

What do you know about the speculative execution?

433

What are the differences between hadoop 1 and hadoop 2?

399

Why do the nodes are removed and added frequently in a hadoop cluster?

444

What is a namenode?

366

Can hadoop handle streaming data?

433

What is hadoop? Name the main components of a hadoop application?

415

What do you know about yarn?

384

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Un-Answered Questions { Hadoop General }

What does the file hadoop-metrics.properties do?

453

What the information segments utilized by hadoop are?

384

What a task tracker is in hadoop?

412

Which port does SSH work on?

383

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

402

What is CAP Theorem? What aspects does Hadoop support from this theorem?

440

what happens when namenode goes down during file read operation in hadoop?

561

Which directory does hadoop install to?

465

What is JPS? Why is it used in Hadoop?

491

Mention what is data cleansing?

408

If DataNode increases, then do we need to upgrade NameNode in Hadoop?

426

Explain the Single point of Failure in Hadoop?

445

Explain map-only job?

496

How NameNode tackle Datanode failures in Hadoop?

442

If the hadoop administrator needs to make a change, which configuration file does he need to change?

410

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