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

Big Data Interview Questions

Questions Answers Views Company eMail

Does impala performance improve as it is deployed to more hosts in a cluster in much the same way that hadoop performance does?

164

What is RDD in Apache Spark? How are they computed in Spark? what are the various ways in which it can create?

320

What role does worker node play in Apache Spark Cluster? And what is the need to register a worker node with the driver program?

346

What is SparkSession in Apache Spark? Why is it needed?

378

What is the task of Spark Engine

326

What is the user of sparkContext?

313

How is the processing of streaming data achieved in Apache Spark? Explain.

286

Can you do real-time processing with Spark SQL?

317

Discuss the role of Spark driver in Spark application?

286

What are the features of RDD, that makes RDD an important abstraction of Spark?

280

What is Apache Spark? What is the reason behind the evolution of this framework?

278

What are accumulators in Apache Spark?

318

What is the reason behind Transformation being a lazy operation in Apache Spark RDD? How is it useful?

480

Explain about the different types of trformations on dstreams?

302

Describe the run-time architecture of Spark?

282

Un-Answered Questions { Big Data }

Explain the various types of partitioners in cassandra?

What is a keyspace in Cassandra?

103

how can you identify whether a given operation is transformation or action?

271

How we can take Hadoop out of Safe Mode?

855

How the SSTable is different from other relational tables?

Elaborate on CQL?

What is row in hbase?

168

Explain the fundamental difference between Cassandra and Hadoop?

224

Define sparksession in apache spark? Why is it needed?

275

What is the difference between an input split and hdfs block?

102

Explain first() operation in Spark?

348

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

143

What is difference between cache and persist in spark?

275

Name different elements of JConsole?

What are the advantages of DataFrame?

312

For More Un-Answered { Big Data } Questions Click Here