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?

1 329

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

1 335

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

1 303

What is write ahead log(journaling)?

1 323

Does Apache Spark provide checkpoints?

1 308

What is Apache Spark Machine learning library?

1 339

What is the use of map transformation?

1 328

Explain the run-time architecture of Spark?

1 316

List the advantage of Parquet files?

1 313

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

1 324

Please provide an explanation on DStream in Spark.

1 297

List the languages supported by Apache Spark?

1 321

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

1 380

Explain lineage graph

1 332

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

1 491

Un-Answered Questions { Big Data }

How to set property in apache tajo?

When to choose "External Table" in Hive?

847

How you can contact your client everyday ?

1013

What is a Hive variable? What for we use it?

854

What is the function of UNION and SPLIT operators? Give examples?

579

How do I set up flume agent?

Give me the examples of Columnar database ?

641

Which modes can Hadoop be run in? List a few features for each mode?

517

What is the latest version of sqoop?

How can you set an arbitrary number of Reducers to be created for a job in Hadoop?

519

What is the stable version of Hive ?

2673

Explain how RDDs work with Scala in Spark

355

What is the latest version of spark?

288

When we are using queries instead of scripting?

778

When to use explode in Hive?

803

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