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

MapReduce Interview Questions

Questions Answers Views Company eMail

List the network requirements for using Hadoop ?

627

What is the next step after Mapper or MapTask?

644

What are the main components of MapReduce Job?

680

What is the relationship between Job and Task in Hadoop?

662

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

624

How to set mappers and reducers for Hadoop jobs?

613

What are the data components used by Hadoop?

738

What is the best way to copy files between HDFS clusters?

668

Is it possible to search for files using wildcards?

642

In Hadoop what is InputSplit?

630

What is partitioning in MapReduce?

717

What is the difference between RDBMS with Hadoop MapReduce?

798

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

653

How to submit extra files(jars,static files) for MapReduce job during runtime in Hadoop?

770

What is a Speculative Execution in Hadoop MapReduce?

653

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Un-Answered Questions { MapReduce }

Define the purpose of the partition function in mapreduce framework

663

In mapreduce what is a scarce system resource? Explain?

669

What is partitioning in MapReduce?

717

What is the relationship between Job and Task in Hadoop?

662

Where is the output of Mapper written in Hadoop?

772

Explain what are the basic parameters of a mapper?

804

What is shuffling and sorting in mapreduce?

642

mapper or reducer?

995

What is an input reader in reference to mapreduce?

622

What is mapper in map reduce?

641

Can we rename the output file?

685

Which Sorting algorithm is used in Hadoop MapReduce?

599

List the network requirements for using Hadoop ?

627

How to configure the number of the Combiner in MapReduce?

625

What is a "map" in Hadoop?

793

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