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

MapReduce Interview Questions

Questions Answers Views Company eMail

What is a distributed cache in mapreduce framework?

604

What do you mean by data locality?

672

How can we assure that the values regarding a particular key goes to the same reducer?

606

What are ‘reduces’?

702

Explain how do ‘map’ and ‘reduce’ work?

606

How do ‘map’ and ‘reduce’ work?

649

Explain the input type/format in mapreduce by default?

579

What is the difference between map and reduce?

626

What is optimal size of a file for distributed cache?

635

Post New MapReduce Questions

Un-Answered Questions { MapReduce }

What is the difference between RDBMS with Hadoop MapReduce?

797

What do you understand by mapreduce?

646

how is data partitioned before it is sent to the reducer if no custom partitioner is defined in Hadoop?

781

Where is Mapper output stored?

853

What is the default input type in MapReduce?

660

How do Hadoop MapReduce works?

721

What are mapreduce new and old apis while writing map reduce program?. Explain how it works

649

List out Hadoop's three configuration files?

602

what is Speculative Execution?

831

How many InputSplits is made by a Hadoop Framework?

642

What is shuffleing in mapreduce?

647

What are the fundamental configurations parameters specified in map reduce?

634

What happen if the number of the reducer is 0 in MapReduce?

650

Where the mapper's intermediate data will be stored?

635

What is shuffling and sorting in Hadoop MapReduce?

625

For More Un-Answered { MapReduce } Questions Click Here