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

710

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

679

Explain task granularity

688

Explain the general mapreduce algorithm

695

What is mapper in map reduce?

695

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

637

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

641

Clarify what is shuffling in map reduce?

683

What are the fundamental configurations parameters specified in map reduce?

674

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

654

What are the four essential parameters of a mapper?

700

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

728

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

657

What is the function of mapreduce partitioner?

685

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

653

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Un-Answered Questions { MapReduce }

how JobTracker schedules a task ?

898

What are the data components used by Hadoop?

783

How is mapreduce related to cloud computing?

705

How many InputSplits is made by a Hadoop Framework?

713

Explain about the partitioning, shuffle and sort phase

723

when do reducers play their role in a mapreduce task?

652

Explain InputSplit in Hadoop MapReduce?

720

How to set the number of mappers for a MapReduce job?

751

What is partitioner and its usage?

744

What are the benefits of Spark over MapReduce?

691

When is the reducers are started in a MapReduce job?

916

how indexing in HDFS is done?

892

It can be possible that a Job has 0 reducers?

1002

What are ‘maps’ and ‘reduces’?

742

What do you mean by shuffling and sorting in MapReduce?

750

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