Big Data Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Big Data Interview Questions

Questions Answers Views Company eMail

What is difference between scala and spark?

301

What is apache spark sql?

275

What is spark reducebykey?

259

Do I need scala for spark?

270

Is spark built on top of hadoop?

300

What exactly is apache spark?

276

Where is spark rdd?

259

What is spark yarn executor memoryoverhead?

354

Is apache spark worth learning?

297

What is spark mapvalues?

267

Why is spark fast?

277

Does diesel engine have spark plug?

335

Is spark faster than hadoop?

341

What is spark job?

324

What is the default partition in spark?

274

Un-Answered Questions { Big Data }

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

389

Can you define a block and block scanner in hdfs?

After the Map phase finishes, the Hadoop framework does 'Partitioning, Shuffle and sort'. Explain what happens in this phase?

443

What are the important tools useful for big data?

522

What is distributed copy (distcp)?

443

What does hadoop-env.sh do?

412

What happen if one of the datanodes has much slower cpu?

389

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

426

What do you know about nlineoutputformat?

648

Can you explain spark rdd?

282

Is there any benefit of learning MapReduce, then?

278

Explain the five vs of big data?

501

What are the four features of Big Data?

526

Explain what does hbase consists of?

155

What is heartbeat in hdfs? Explain.

651

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