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

Big Data Interview Questions

Questions Answers Views Company eMail

Explain Spark leftOuterJoin() and rightOuterJoin() operation?

315

List out the difference between textFile and wholeTextFile in Apache Spark?

420

What are the exact differences between reduce and fold operation in Spark?

465

Explain countByValue() operation in Apache Spark RDD?

288

Explain Spark countByKey() operation?

343

What is Starvation scenario in spark streaming?

360

Explain the action count() in Spark RDD?

287

Define the run-time architecture of Spark?

295

What are the languages in which Apache Spark create API?

314

What are the features and characteristics of Apache Spark?

309

Explain Spark streaming?

290

Explain first() operation in Spark?

370

Define fold() operation in Apache Spark?

319

Explain reduceByKey() Spark operation?

315

Explain Spark Streaming with Socket?

347

Un-Answered Questions { Big Data }

Establish the difference between a node, cluster & data centres in Cassandra.

166

what is the meaning of broker in Kafka?

608

What is a partition in spark?

400

What are the benefits of Spark over MapReduce?

702

Kafka has written in which languages?

590

Which all languages Apache Spark supports?

359

What is Apache Spark and what are the benefits of Spark over MapReduce?

296

In Hive, can you overwrite Hadoop MapReduce configuration in Hive?

831

What is accumulator in spark?

512

How to use combiner in hadoop ?

490

Why big data?

600

What are the main components of Cassandra data models?

119

Use of export command in hadoop sqoop?

What is Data Locality in Hadoop?

724

Where is the Mapper Output stored?

1418

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