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

MapReduce Interview Questions

Questions Answers Views Company eMail

Define the purpose of the partition function in mapreduce framework

662

What are the various input and output types supported by mapreduce?

628

Explain task granularity

647

Explain the general mapreduce algorithm

643

What is mapper in map reduce?

640

What happens if the quantity of the reducer is 0 in mapreduce?

593

Clarify what combiners are and when you should utilize a combiner in a map reduce job?

592

Clarify what is shuffling in map reduce?

633

What are the fundamental configurations parameters specified in map reduce?

634

What combiners are and when you should utilize a combiner in a map reduce job?

602

What are the four essential parameters of a mapper?

652

Mention what is the hadoop mapreduce apis contract for a key and value class?

681

Explain what combiners are and when you should use a combiner in a mapreduce job?

613

What is the function of mapreduce partitioner?

637

What combiners are and when you should use a combiner in a mapreduce job?

597

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Un-Answered Questions { MapReduce }

What do you understand by compute and storage nodes?

680

Explain what does the conf.setMapper Class do in MapReduce?

652

Developing a MapReduce Application?

963

What is the Hadoop MapReduce API contract for a key and value Class?

1291

What is the need of MapReduce in Hadoop?

629

How does fault tolerance work in mapreduce?

624

Is it possible to search for files using wildcards?

641

Which Sorting algorithm is used in Hadoop MapReduce?

598

What are the data components used by Hadoop?

737

How to compress mapper output in Hadoop?

674

how can you check whether Namenode is working beside using the jps command?

663

What is the difference between HDFS block and input split?

886

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

649

What is the use of InputFormat in MapReduce process?

650

What combiners is and when you should use a combiner in a MapReduce Job?

623

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