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?

278

What are the cases where Apache Spark surpasses Hadoop?

283

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

797

Which the fundamental data structure of Spark

306

List the advantage of Parquet file in Apache Spark?

454

What does map transformation do? Provide an example.

316

What are the different ways of representing data in Spark?

268

What are the features of Spark?

291

What are shared variables in Apache Spark?

325

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

308

Explain the operations of Apache Spark RDD?

281

What are the limitations of Apache Spark?

279

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

319

What is Directed Acyclic Graph(DAG)?

308

What are Actions? Give some examples.

316

Un-Answered Questions { Big Data }

What is a partitioner and how the user can control which key will go to which reducer?

938

Give me examples of unstructured data?

479

Does Cassandra work on Windows?

What is row in hbase?

168

What is Yum?

Explain what does hbase consists of?

159

What is parallelize in spark?

285

Explain HCatReader?

Explain about the basic parameters of mapper and reducer function

1046

Explain Features of Pig?

673

What are the three components of Cassandra write?

116

What is optimal size of a file for distributed cache?

635

Explain the Reducer's Sort phase?

882

RLIKE in Hive?

784

What is Erasure Coding in Hadoop?

506

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