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Hadoop General Interview Questions
Questions Answers Views Company eMail

Explain what is sequencefileinputformat?

 333

Mention how hadoop is different from other data processing tools?

 310

Mention what are the most common input formats defined in hadoop?

 322

Mention what is rack awareness?

 292

Mention what is the difference between an rdbms and hadoop?

 305

Mention what are the three modes in which hadoop can be run?

 309

Explain how does hadoop classpath plays a vital role in stopping or starting in hadoop daemons?

 488

Explain what is storage and compute nodes?

 355

Explain how jobtracker schedules a task?

 328

Explain what happens when hadoop spawned 50 tasks for a job and one of the task failed?

 326

What happens in text format?

 339

Explain how is data partitioned before it is sent to the reducer if no custom partitioner is defined in hadoop?

 338

Explain what is a task tracker in hadoop?

 289

Explain what is speculative execution?

 293

Explain what happens in text format?

 412

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Un-Answered Questions { Hadoop General }

How many datanodes can run on a single Hadoop cluster?

310

Clarify how job tracker schedules an assignment?

311

Explain Hadoop Archives?

356

What is Rack Awareness? What is its need in Hadoop?

354

In which directory hadoop is installed?

296

How analysis of Big Data is useful for organizations?

355

What is streaming access?

361

Can you explain textinformat?

354

What is TaskTracker?

366

Explain what is webdav in hadoop?

350

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

391

What is Combiner in Hadoop?

356

What are some of the characteristics of Hadoop framework?

321

Mention how hadoop is different from other data processing tools?

310

Can I set the number of reducers to zero?

306

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