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 are the benefits of Spark over MapReduce?

643

What are the disservices of utilizing Apache Spark over Hadoop MapReduce?

632

Why do we need MapReduce during Pig programming?

643

What is difference between a MapReduce InputSplit and HDFS block

676

What is lineage graph in Apache Spark?

351

Different Running Modes of Apache Spark

310

How will you calculate the number of executors required to do real-time processing using Apache Spark? What factors need to be considered for deciding on the number of nodes for real-time processing?

289

List the popular use cases of Apache Spark?

289

What is Spark.executor.memory in a Spark Application?

305

Compare Hadoop and Spark?

322

What is write ahead log(journaling) in Spark?

427

What are Actions?

318

What are the limitations of Spark?

294

What is a reliable and unreliable receiver in Spark?

322

In a given spark program, how will you identify whether a given operation is Transformation or Action ?

343

Un-Answered Questions { Big Data }

How is spark different from hadoop?

298

What is Big Data?

614

Does spark need yarn?

242

To use Spark on an existing Hadoop Cluster, do we need to install Spark on all nodes of Hadoop?

358

What are the types of transformation in RDD in Apache Spark?

321

What is difference between client and cluster mode in spark?

383

How Pig programming gets converted into MapReduce jobs?

613

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

691

What is the significance of ‘IF EXISTS” clause while dropping a table?

715

Mention the salient features of apache tajo ?

What is the role of JDBC driver in Sqoop?

What is the use of hbase hmaster?

149

How do I get better performance with spark?

295

What are some typical functions of job tracker in hadoop?

418

Is spark sql a database?

263

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