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 SQL caching and uncaching?

331

What are the different input sources for Spark Streaming?

375

How do we represent data in Spark?

357

Explain leftOuterJoin() and rightOuterJoin() operation in Apache Spark?

393

Explain Spark coalesce() operation?

293

Explain keys() operation in Apache spark?

335

What are the roles and responsibilities of worker nodes in the Apache Spark cluster? Is Worker Node in Spark is same as Slave Node?

356

Explain sum(), max(), min() operation in Apache Spark?

301

Explain cogroup() operation in Spark?

287

What is Map() operation in Apache Spark?

364

Explain Spark saveAsTextFile() operation?

342

Define paired RDD in Apache Spark?

279

Explain different transformations in DStream in Apache Spark Streaming?

330

Explain pipe() operation in Apache Spark?

311

What are the ways to create RDDs in Apache Spark? Explain.

306

Un-Answered Questions { Big Data }

What is the use of having Filters in Apache Pig ?

704

What is your favourite tool in the hadoop ecosystem?

958

What are secondary indexes?

Can you define a block and block scanner in hdfs?

How do I try impala out?

What is shuffle spill in spark?

283

What do you understand by receivers in Spark Streaming ?

326

What is a udf?

448

What is the purpose of dfsadmin tool?

1246

What are the differences between a node, a cluster, and datacenter in Cassandra?

Clarify what is sqoop in hadoop?

419

Mention what is the traditional method of message transfer?

574

How can you send some messages in kafka?

503

Define Writable data types in MapReduce?

675

Explain tobag function?

553

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