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

MapReduce Interview Questions

Questions Answers Views Company eMail

What is the difference between Job and Task in MapReduce?

614

Compare Pig vs Hive vs Hadoop MapReduce?

675

What is the fundamental difference between a MapReduce InputSplit and HDFS block?

620

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

635

How to get the single file as the output from MapReduce Job?

627

Why is output file name in Hadoop MapReduce part-r-00000?

629

Which among the two is preferable for the project- Hadoop MapReduce or Apache Spark?

600

Explain the process of spilling in Hadoop MapReduce?

632

What Are Good Use Cases For Impala As Opposed To Hive Or MapReduce?

600

What are the the issues associated with the map and reduce slots based mechanism in mapReduce?

645

What are the benefits of Spark over MapReduce?

643

What are the disservices of utilizing Apache Spark over Hadoop MapReduce?

632

Why do we need MapReduce during Pig programming?

643

What is difference between a MapReduce InputSplit and HDFS block

676

What is the job of blend () and repartition () in Map Reduce?

639

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Un-Answered Questions { MapReduce }

What is the process of changing the split size if there is limited storage space on Commodity Hardware?

708

Differentiate Reducer and Combiner in Hadoop MapReduce?

680

Is it possible to search for files using wildcards?

642

What is the relation between MapReduce and Hive?

643

With the help of two examples name the map and reduce function purpose

638

Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?

615

What is sqoop in Hadoop ?

684

What is difference between an input split and hdfs block?

656

How can we control particular key should go in a specific reducer?

914

How hadoop mapreduce works?

640

Explain what is shuffling in mapreduce?

627

When should you use sequencefileinputformat?

661

What is the inputsplit in map reduce software?

620

Where sorting is done in Hadoop MapReduce Job?

650

What is the purpose of textinputformat?

704

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