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

MapReduce Interview Questions

Questions Answers Views Company eMail

Explain InputSplit in Hadoop MapReduce?

623

How much space will the split occupy in Mapreduce?

634

What is a RecordReader in Hadoop MapReduce?

635

What is the difference between HDFS block and input split?

845

How to write MapReduce Programs?

652

What is the difference between an RDBMS and Hadoop?

606

How does Hadoop Classpath plays a vital role in stopping or starting in Hadoop daemons?

672

What is the data storage component used by Hadoop?

580

When is it not recommended to use MapReduce paradigm for large scale data processing?

617

What is sqoop in Hadoop ?

639

What do you understand by the term Straggler ?

635

Explain about the basic parameters of mapper and reducer function

1008

How many InputSplits is made by a Hadoop Framework?

580

What do you understand by compute and storage nodes?

645

Explain job scheduling through JobTracker

680

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Un-Answered Questions { MapReduce }

Explain job scheduling through JobTracker

680

What is MapReduce in Hadoop?

597

What is the relation between MapReduce and Hive?

585

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

651

How do Hadoop MapReduce works?

672

How to specify more than one directory as input in the Hadoop MapReduce Program?

663

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

580

How hadoop mapreduce works?

593

How do reducers communicate with each other?

601

Mention Hadoop core components?

612

What is Output Format in MapReduce?

652

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

597

In Hadoop, which file controls reporting in Hadoop?

741

How is reporting controlled in hadoop?

736

What is shuffleing in mapreduce?

598

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