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

Hadoop General Interview Questions

Questions Answers Views Company eMail

How to create hadoop archive?

454

When should be hadoop archive create?

460

What mode(s) can hadoop code be run in?

488

How often do you need to reformat the namenode?

552

What is the role of the namenode?

492

What happen on the namenode when a client tries to read a data file?

501

What is replication factor?

482

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

491

What is distributed copy (distcp)?

520

What is the role of the secondary namenode?

481

Are there any special requirements for namenode?

457

is there a standard procedure to deploy hadoop?

457

What happen if a datanode loses network connection for a few minutes?

643

What is the procedure for namenode recovery?

489

How would an hadoop administrator deploy various components of hadoop in production?

453

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Un-Answered Questions { Hadoop General }

Clarify what is sequence file input format?

567

What is Chain Mapper?

600

is there a standard procedure to deploy hadoop?

457

What are some typical functions of Job Tracker?

470

What are the primary phases of the reducer?

487

Explain how can you debug hadoop code?

503

Explain what is a task tracker in hadoop?

500

Ideally what should be replication factor in a Hadoop cluster?

551

Are there any special requirements for namenode?

457

What is the job tracker role in hadoop?

475

What are the Hadoop features extended to its eco-system components ?

481

What type of data hadoop can handle ?

472

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

473

What is Balancer in Hadoop?

522

Which port does SSH work on?

432

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