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Hadoop Interview Questions
Questions Answers Views Company eMail

Mention how many inputsplits is made by a hadoop framework?

 296

Explain what is jobtracker in hadoop? What are the actions followed by hadoop?

 225

Explain is it possible to search for files using wildcards?

 227

Explain what is hadoop?

 261

Explain what is sequencefileinputformat?

 243

Mention how hadoop is different from other data processing tools?

 236

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

 249

Mention what is rack awareness?

 225

Mention what is the difference between an rdbms and hadoop?

 239

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

 234

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

 409

Explain what is storage and compute nodes?

 268

Explain how jobtracker schedules a task?

 256

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

 258

What happens in text format?

 238

Un-Answered Questions { Hadoop }

Is apache spark a tool?

182

Define replication strategy?

58

What are the various InputFormats in Hadoop?

376

What is the use of coordinator node in read?

56

What does it mean by Columnar Storage Format?

216




What is aws spark?

194

Why is Data Block size set to 128 MB in Hadoop?

241

Explain REPEAT function in Hive with example?

491

What is the next step after Mapper or MapTask?

389

What happens when we submit a spark job?

226

Explain the terms memtable, commitlog and sstables.

51

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

234

What is spark dynamic allocation?

211

Explain Features of Pig?

337

What is the use of get() method?

102

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