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 are the main features and Characteristics of Hadoop which makes it the most popular and powerful Big Data tool?

360

What are the configuration files in Hadoop?

329

Compare Apache Hadoop and Apache Spark?

302

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

344

Explain how Hadoop cluster hardware planning and provisioning is done?

366

How to create a user in Hadoop?

297

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

311

What is single node cluster in Hadoop? for what all purposes Hadoop run on a single node cluster?

390

How to specify more than one path for storage in Hadoop?

335

What is a single point of failure in Hadoop 1 and how is it resolved in Hadoop 2?

362

What is JPS? Why is it used in Hadoop?

317

What is the key difference between NameNode and DataNode in Hadoop?

316

What is Small File Problem in Hadoop? How can it be resolved?

343

Ideally what should be replication factor in a Hadoop cluster?

337

What is NameNode? How NameNode tackle Datanode failures in Hadoop?

333

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Un-Answered Questions { Hadoop General }

How to debug Hadoop code?

349

Which object can be used to get the progress of a particular job

337

What is TextInputFormat in Hadoop?

323

Tell me some major benefits of Hadoop?

299

How do you overwrite replication factor?

314

What are the restriction to the key and value class ?

317

List out the some common problems faced by data analyst?

298

Explain what happens in text format?

412

Clarify what webdav is in hadoop?

309

What is Erasure Coding in Hadoop?

302

What is High Availability feature in Hadoop2?

314

What is Small File Problem in Hadoop? How can it be resolved?

343

How often DataNode send heartbeat to NameNode in Hadoop?

386

Define data cleansing?

282

What is Distributed Cache in Hadoop?

340

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