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 commodity hardware?

382

Explain what is sqoop in Hadoop ?

431

Explain how do ‘map’ and ‘reduce’ works?

427

Explain what is the purpose of RecordReader in Hadoop?

439

How to restart Namenode?

448

Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?

477

Mention what are the data components used by Hadoop?

390

What does /etc /init.d do?

421

What is a Combiner?

422

Main Components of Hadoop?

440

What are the four characteristics of Big Data?

437

Mention what is the number of default partitioner in Hadoop?

422

Explain what happens in textinformat ?

485

Explain the rudimentary difference between Cassandra and HBase?

Is HDFS utilized in Cassandra? If yes, where?

Un-Answered Questions { Big Data }

When does queuefullexception occur?

386

How spark is used in hadoop?

194

Where is spark rdd?

190

What languages support spark?

201

What is deploy mode in spark?

204

what happens when Hadoop spawned 50 tasks for a job and one of the task failed?

405

If DataNode increases, then do we need to upgrade NameNode?

275

Explain the concept of cassandra data model?

Give me the examples of Columnar database ?

257

List the popular use cases of Apache Spark?

204

What file systems Spark support?

206

Explain what is a keyspace in Cassandra?

Can you explain spark streaming?

193

What are the advantage of spark?

197

what is JobTracker in Hadoop? What are the actions followed by Hadoop?

516

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