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

Big Data Interview Questions

Questions Answers Views Company eMail

By Default, how many partitions are created in RDD in Apache Spark?

327

What are broadcast variables in Apache Spark? Why do we need them?

333

Is it necessary to start Hadoop to run any Apache Spark Application ?

300

What is write ahead log(journaling)?

321

Does Apache Spark provide checkpoints?

306

What is Apache Spark Machine learning library?

337

What is the use of map transformation?

326

Explain the run-time architecture of Spark?

314

List the advantage of Parquet files?

311

Name the Spark Library which allows reliable file sharing at memory speed across different cluster frameworks.

322

Please provide an explanation on DStream in Spark.

295

List the languages supported by Apache Spark?

319

Explain the Parquet File format in Apache Spark. When is it the best to choose this?

378

Explain lineage graph

330

Is the following approach correct? Is the sqrt Of Sum Of Sq a valid reducer?

489

Un-Answered Questions { Big Data }

Differentiate between Pig Latin and Pig Engine?

891

What is the difference between a node, a cluster, and data centre?

267

when do reducers play their role in a mapreduce task?

663

Explain Data Locality in Hadoop?

594

Is spark secure?

297

What is the role of the kafka producer api.

588

Explain what if rack 2 and datanode fails?

679

What is the utility of using Writable Comparable Custom Class in Map Reduce code?

1058

Name some companies that use Hadoop?

1011

What are nodes and ephemeral nodes?

What is hfile ?

301

What is CQL?

Use of Help command in Hadoop sqoop?

What happens when you submit spark job?

288

Can I do insert … select * into a partitioned table?

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