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 Executor

282

Explain the level of parallelism in Spark Streaming? Also, describe its need.

326

What are the various storages from which Spark can read data?

340

What is a Sparse Vector?

330

What is the difference between Caching and Persistence in Apache Spark?

321

What are the roles of the file system in any framework?

315

Name some companies that are already using Spark Streaming?

268

What is Spark Streaming?

297

What does it mean by Columnar Storage Format?

301

What is Spark Dataset?

327

Why is there a need for broadcast variables when working with Apache Spark?

308

What is the abstraction of Spark Streaming?

263

What are shared variables?

332

Does Spark provide the storage layer too?

278

What are the advantages of datasets in spark?

277

Un-Answered Questions { Big Data }

Explain Spark countByKey() operation?

317

How the read operation is performed on Cassandra node ?

102

What is hdfs in big data?

What are the other components of Cassandra?

What is cluster in Cassandra data model?

What is log compaction?

527

What is skew data?

301

Tell me some major benefits of Hadoop?

408

Name different types of primary keys in Cassandra?

What is Client API?

281

Explain the various Transformation on Apache Spark RDD like distinct(), union(), intersection(), and subtract()?

298

How hbase uses zookeeper?

Ideally what should be replication factor in a Hadoop cluster?

518

Explain about the major libraries that constitute the Spark Ecosystem?

417

What are the different modes in which PIG can run and explain those?

493

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