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Topic :: MapReduce





MapReduce Interview Questions
Questions Answers Views Company eMail

Why MapReduce uses the key-value pair to process the data?

 632

What is Distributed Cache in the MapReduce Framework?

 625

How to create a custom key and custom value in MapReduce Job?

 674

Is reduce-only job possible in Hadoop MapReduce?

 696

How to optimize MapReduce Job?

 648

In MapReduce how to change the name of the output file from part-r-00000?

 626

In MapReduce Data Flow, when Combiner is called?

 646

Differentiate Reducer and Combiner in Hadoop MapReduce?

 679

What is the key- value pair in MapReduce?

 774

A number of combiners can be changed or not in MapReduce?

 647

How to write a custom partitioner for a Hadoop MapReduce job?

 650

What is the need of MapReduce in Hadoop?

 629

What does a 'MapReduce Partitioner' do?

 680

What is the difference between Reducer and Combiner in Hadoop MapReduce?

 677

What is KeyValueTextInputFormat in Hadoop MapReduce?

 803



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