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 type of data hadoop can handle ?

425

What does the high availability of a name-node means?

427

What does block mean?

441

What do you think about the speculative execution?

438

What did mean by data-node?

428

How to use combiner in hadoop ?

445

Mention what is the data storage component used by hadoop?

446

Mention what does the text input format do?

414

Mention what daemons run on a master node and slave nodes?

469

Explain what is namenode in hadoop?

438

Explain what is a sequence file in hadoop?

467

Mention how many inputsplits is made by a hadoop framework?

578

Explain what is jobtracker in hadoop? What are the actions followed by hadoop?

410

Explain is it possible to search for files using wildcards?

478

Explain what is hadoop?

434

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Un-Answered Questions { Hadoop General }

How Big is ‘Big Data’?

427

Name the most common input formats defined in hadoop?

443

How many maps are there in a particular job?

458

Explain some important features of hadoop?

447

Specify what the information segments utilized by hadoop are?

438

What is the most widely recognized info formats characterized in hadoop?

431

List Hadoop’s three configuration files?

421

Explain Data Locality in Hadoop?

537

Explain how can we check whether namenode is working or not?

570

What are the major differences between Hadoop 2 and Hadoop 3?

480

What is the use of recordreader in hadoop?

421

What is distributed copy (distcp)?

484

Explain how jobtracker schedules a task?

465

what if job tracker machine is down?

475

What are the different modes in which we can configure/install Hadoop?

542

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