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 different pig data types?

744

Explain about the different complex data types in Pig?

652

What is a relation in Pig?

712

Explain the difference between COUNT_STAR and COUNT functions in Apache Pig?

765

How should 'store' keyword is useful in pig scripts?

642

What is the use of having Filters in Apache Pig ?

703

How to write 'foreach' statement for map datatype in pig scripts?

665

What are the basic steps to writing a UDF Function in Pig?

699

What are the various diagnostic operators available in Apache Pig?

735

What is a bag in Pig Latin?

863

What are the different Relational Operators available in pig language?

732

What are the different ways of executing Pig script?

787

Explain the LOAD keyword in Pig script?

627

What is a MapFile?

739

Name the scalar data type and complex data types in Pig?

674

Un-Answered Questions { Big Data }

What are the various levels of persistence in Apache Spark?

320

What are the different types of nosql databases?

Why replication is required in Kafka?

506

How to do ‘map’ and ‘reduce’ works?

572

Explain different execution modes available in Pig?

779

Explain about mappartitions() and mappartitionswithindex()

324

What is the command to change the replication factor ?

501

What is 'Key value pair' in HDFS?

960

What do the master class and the output class do?

667

Explain how can we change the split size if our commodity hardware has less storage space?

648

What is Apache Spark and what are the benefits of Spark over MapReduce?

278

Does 'ILLUSTRATE' run MR job?

852

Mention what are the data components used by Hadoop?

659

What is dataframe in spark?

289

What is Spark SQL?

306

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