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Topic :: MapReduce





MapReduce Interview Questions
Questions Answers Views Company eMail

What is Reducer in MapReduce?

 729

How many Reducers run for a MapReduce job in Hadoop?

 590

What is MapReduce in Hadoop?

 639

Why Hadoop MapReduce?

 664

Why can aggregation not be done in Mapper in MapReduce?

 607

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

 670

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

 664

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

 650

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

 668

What are the main configuration parameters in a MapReduce program?

 635

What do you mean by shuffling and sorting in MapReduce?

 697

What is Combiner in MapReduce?

 639

Where sorting is done in Hadoop MapReduce Job?

 649

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

 670

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

 818



Related Topics


Un-Answered Questions { MapReduce }

What MapReduce framework consists of?

1094

Can we submit the mapreduce job from slave node?

1104

What is a IdentityMapper and IdentityReducer in MapReduce ?

943

Explain Working of MapReduce?

969

Write a Mapreduce Program for Character Count ?

1047

how to proceed to write your first mapreducer program?

1342

Developing a MapReduce Application?

963

Different ways of debugging a job in MapReduce?

1105

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

899

How does MapReduce framework view its input internally?

867

What are the steps involved in MapReduce framework?

979

What is the Job interface in MapReduce framework?

906

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

1091

What is the core of the job in MapReduce framework?

848

How Pig differs from MapReduce?

797