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Topic :: MapReduce





MapReduce Interview Questions
Questions Answers Views Company eMail

What is Reducer in MapReduce?

 691

How many Reducers run for a MapReduce job in Hadoop?

 555

What is MapReduce in Hadoop?

 598

Why Hadoop MapReduce?

 627

Why can aggregation not be done in Mapper in MapReduce?

 579

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

 635

What is MapReduce? What are the syntax you use to run a MapReduce program?

 630

What happen if the number of the reducer is 0 in MapReduce?

 605

What is the need of key-value pair to process the data in MapReduce?

 618

What are the main configuration parameters in a MapReduce program?

 595

What do you mean by shuffling and sorting in MapReduce?

 650

What is Combiner in MapReduce?

 593

Where sorting is done in Hadoop MapReduce Job?

 611

What are the configuration parameters in the 'MapReduce' program?

 631

Explain about the partitioning, shuffle and sort phase in MapReduce?

 776



Related Topics


Un-Answered Questions { MapReduce }

What MapReduce framework consists of?

1057

Can we submit the mapreduce job from slave node?

1051

What is a IdentityMapper and IdentityReducer in MapReduce ?

900

Explain Working of MapReduce?

920

Write a Mapreduce Program for Character Count ?

1004

how to proceed to write your first mapreducer program?

1304

Developing a MapReduce Application?

900

Different ways of debugging a job in MapReduce?

1059

What are combiners? When should I use a combiner in my MapReduce Job?

865

How does MapReduce framework view its input internally?

829

What are the steps involved in MapReduce framework?

932

What is the Job interface in MapReduce framework?

862

How to overwrite an existing output file during execution of mapreduce jobs?

1047

What is the core of the job in MapReduce framework?

794

How Pig differs from MapReduce?

738