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

Big Data Interview Questions

Questions Answers Views Company eMail

List the functions of Spark SQL?

507

What is RDD?

502

How to create RDD?

513

Does Apache Spark provide check pointing?

419

Explain about the popular use cases of Apache Spark

436

Do you need to install Spark on all nodes of Yarn cluster while running Spark on Yarn?

667

What are the different String functions available in pig?

857

Differentiate between the physical plan and logical plan in Pig script?

815

What are the use cases of Apache Pig?

839

What do you understand by an inner bag and outer bag in Pig?

884

Explain different execution modes available in Pig?

832

How do users interact with HDFS in Apache Pig ?

804

what are the basic parameters of a Mapper?

878

What is a MapReduce Combiner?

857

Where is Mapper output stored?

916

Un-Answered Questions { Big Data }

How often do you need to reformat the namenode?

566

Can you explain sqoop metastore?

What is jmx? And how is it useful in cassandra?

Explain what is speculative execution?

465

Why do we need sparkcontext?

316

Is kafka big data?

522

Define a record reader?

457

UPPER or UCASE function in Hive with example?

863

What is the functionality of Query Processor in Apache Hive?

810

If there is certain data that we want to use again and again in different transformations, what should improve the performance?

322

What is the major difference between local and remote meta-store?

953

What is small file problem in hadoop?

838

Explain various level of persistence in Apache Spark?

318

List various commonly used machine learning algorithm?

394

What makes Apache Spark good at low-latency workloads like graph processing and machine learning?

344

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