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?

419

When should be hadoop archive create?

431

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

459

How often do you need to reformat the namenode?

511

What is the role of the namenode?

452

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

461

What is replication factor?

435

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

442

What is distributed copy (distcp)?

484

What is the role of the secondary namenode?

441

Are there any special requirements for namenode?

425

is there a standard procedure to deploy hadoop?

423

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

589

What is the procedure for namenode recovery?

454

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

422

Post New Hadoop General Questions

Un-Answered Questions { Hadoop General }

Compare Apache Hadoop and Apache Spark?

446

Which database is used in hadoop?

481

How to create hadoop archive?

419

How can one write custom record reader?

488

What are the modes in which Hadoop run?

504

If we want to copy 10 blocks from one machine to another, but another machine can copy only 8.5 blocks, can the blocks be broken at the time of replication?

665

Why aggregation cannot be done in Mapper?

561

Clarify what a task tracker is in hadoop?

427

Is nosql follow relational db model?

467

How Hadoop is cost-effective?

415

What daemons run on master nodes?

486

What are the features of Standalone (local) mode?

596

Name the operating system(s) which are supported for production hadoop deployment?

437

What are the benefits yarn brings in to hadoop?

424

Which are the three modes in which hadoop can be run?

478

For More Un-Answered { Hadoop General } Questions Click Here