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

328

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?

288

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?

481

Explain about the different types of trformations on dstreams?

302

Describe the run-time architecture of Spark?

282

Un-Answered Questions { Big Data }

What are the relational operators available related to loading and storing in pig language?

630

Why do we need hadoop for big data analytics?

431

Define partitioning key?

483

How does A/B testing work?

634

What do you mean by Schema Declaration?

What does adminclient api in kafka?

526

what does the conf.setMapper Class do ?

815

In which language Cassandra is written?

What is regionserver?

179

Name different types of the data model?

What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?

1105

What are the ways to run spark over hadoop?

312

what are Task Tracker and Job Tracker?

1071

What happens to existing data in my cluster when I add new nodes?

230

What is pipelined rdd?

255

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