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 the difference between rdd and dataframe?

314

What is flatmap in angular?

308

Which storage level does the cache () function use?

272

What is difference between coalesce and repartition?

339

What is sc parallelize?

331

What is sc textfile?

318

What is difference between map and flatmap?

274

What is difference between map and flatmap in spark?

298

What is the use of flatmap in spark?

264

Does kafka use hdfs?

473

Is kafka big data?

458

Is kafka part of hadoop?

472

What are brokers in kafka?

475

What is kafka in hadoop?

483

What is kafka technology?

483

Un-Answered Questions { Big Data }

What is key-value store db?

What is pipelined rdd?

243

What is accumulator in spark?

439

How client application interacts with the NameNode?

913

Explain job scheduling through JobTracker

682

List out the other components of cassandra?

What is a "Parquet" in Spark?

293

What is Reducer in MapReduce?

696

What is hadoop? Name the main components of a hadoop application?

413

What are the four features of Big Data?

524

Define memtable?

How can you avoid importing tables one-by-one when importing a large number of tables from a database?

What is spark mapvalues?

265

Can you explain rack awareness?

400

What is meant by rdd in spark?

249

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