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

296

What are the cases where Apache Spark surpasses Hadoop?

299

What is the bottom layer of abstraction in the Spark Streaming API ?

813

Which the fundamental data structure of Spark

330

List the advantage of Parquet file in Apache Spark?

472

What does map transformation do? Provide an example.

332

What are the different ways of representing data in Spark?

287

What are the features of Spark?

305

What are shared variables in Apache Spark?

341

What are the various libraries available on top of Apache Spark?

326

Explain the operations of Apache Spark RDD?

302

What are the limitations of Apache Spark?

295

State the difference between persist() and cache() functions.

335

What is Directed Acyclic Graph(DAG)?

329

What are Actions? Give some examples.

330

Un-Answered Questions { Big Data }

What are the features of Fully-Distributed mode?

562

What is the role of a MapReduce partitioner?

872

Can hive run without hadoop?

723

What are the advantages of DataFrame?

324

How do I start flume in hadoop?

What are the four basic parameters of a reducer?

720

Who is the founder of spark?

330

Can we change the file cached by distributed cache

485

Is it possible to search for files using wildcards?

710

What is the difference between coalesce and repartition in spark?

335

What is CQL?

Why rack awareness algorithm is used in hadoop?

How data transfer happens from HDFS to Hive?

886

What is spark reducebykey?

293

Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?

1267

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