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 spark sql use hive?

273

What is the default spark executor memory?

281

What is the difference between coalesce and repartition in spark?

317

What does rdd mean?

314

How does groupbykey work in spark?

299

What is tungsten in spark?

393

What is the difference between dataframe and dataset in spark?

284

What is an accumulator in spark?

299

What is apache spark used for?

304

What is the difference between spark and scala?

354

What is accumulators and broadcast variables in spark?

328

Does spark run hadoop?

299

What is coalesce in spark sql?

311

What are the features of spark rdd?

286

What is cluster mode in spark?

319

Un-Answered Questions { Big Data }

What are the tools used in big data?

434

What is a Consumer Group?

604

What happens if the preferred replica is not in the isr?

566

How is fault tolerance achieved in Apache Spark?

305

What are the features and characteristics of Apache Spark?

289

If data is present in HDFS and RF is defined, then how can we change Replication Factor?

What is the difference between sort by and order by in hive?

680

What is the difference between spark and python?

309

Explain how does hadoop classpath plays a vital role in stopping or starting in hadoop daemons?

614

Define a metadata?

653

When you are dealing with static data instead of dynamic data?

735

Does Flume provide 100% reliability to the data flow?

137

What is the significance of cluster class in Cassandra?

Define Compaction?

Where does Big Data come from?

649

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