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 do you understand by a closure in scala?

350

Can you explain textinformat?

354

List some use cases where classification machine learning algorithms can be used.

298

How many daemon processes run on a hadoop cluster?

311

Which scala library is used for functional programming?

328

Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?

356

Which operating system(s) are supported for production hadoop deployment?

324

Can you explain speculative execution?

299

How do you overwrite replication factor?

315

Can you explain logistic regression?

306

Can you explain combiner?

314

List of some best tools that can be useful for data-analysis?

309

What is the best practice to deploy the secondary name node?

347

What are the tools used in big data?

295

Can you explain indexing?

305

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Un-Answered Questions { Hadoop General }

What is the role of the namenode?

314

What does name-node mean in hadoop?

349

What are the core methods of a Reducer?

341

What type of data hadoop can handle ?

309

What is a combiner in hadoop?

354

Give me examples of unstructured data?

322

Explain how do you overwrite replication factor?

324

How jobtracker assign tasks to the tasktracker?

309

Explain small file problem in hadoop

319

Why does one remove or add nodes in a Hadoop cluster frequently?

498

What is the use of context object?

320

What is the difference between a hadoop database and relational database?

313

Explain what is webdav in hadoop?

350

In which directory hadoop is installed?

296

How namenode handles data node failures?

389

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