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?

308

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

314

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

284

What is write ahead log(journaling)?

310

Does Apache Spark provide checkpoints?

286

What is Apache Spark Machine learning library?

320

What is the use of map transformation?

316

Explain the run-time architecture of Spark?

296

List the advantage of Parquet files?

301

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

308

Please provide an explanation on DStream in Spark.

287

List the languages supported by Apache Spark?

313

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

363

Explain lineage graph

320

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

453

Un-Answered Questions { Big Data }

how to share the metastore within multiple users?

934

Explain the need for MapReduce while programming in Apache Pig?

783

What are different modes of execution in Apache Pig?

886

How do I load a big csv file into a partitioned table?

What is Big Data?

625

Does Apache Spark provide check pointing?

406

When to choose "External Table" in Hive?

812

Explain the architecture of Hadoop Pig?

766

What are the views in Hive?

672

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

748

Different ways of debugging a job in MapReduce?

1113

Can you define yarn?

288

What does ambari shell can provide?

What is the difference between SQL and NoSQL?

1088

What is a udf?

453

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