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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?

 588

What is Distributed Cache in the MapReduce Framework?

 582

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

 642

Is reduce-only job possible in Hadoop MapReduce?

 652

How to optimize MapReduce Job?

 617

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

 602

In MapReduce Data Flow, when Combiner is called?

 601

Differentiate Reducer and Combiner in Hadoop MapReduce?

 627

What is the key- value pair in MapReduce?

 724

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

 596

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

 601

What is the need of MapReduce in Hadoop?

 593

What does a 'MapReduce Partitioner' do?

 638

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

 624

What is KeyValueTextInputFormat in Hadoop MapReduce?

 764



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 ?

1005

how to proceed to write your first mapreducer program?

1304

Developing a MapReduce Application?

900

Different ways of debugging a job in MapReduce?

1060

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

866

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?

1048

What is the core of the job in MapReduce framework?

795

How Pig differs from MapReduce?

739