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Topic :: MapReduce





MapReduce Interview Questions
Questions Answers Views Company eMail

What is Reducer in MapReduce?

 780

How many Reducers run for a MapReduce job in Hadoop?

 632

What is MapReduce in Hadoop?

 699

Why Hadoop MapReduce?

 715

Why can aggregation not be done in Mapper in MapReduce?

 654

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

 734

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

 727

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

 700

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

 721

What are the main configuration parameters in a MapReduce program?

 685

What do you mean by shuffling and sorting in MapReduce?

 762

What is Combiner in MapReduce?

 698

Where sorting is done in Hadoop MapReduce Job?

 692

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

 721

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

 877



Related Topics


Un-Answered Questions { MapReduce }

What MapReduce framework consists of?

1155

Can we submit the mapreduce job from slave node?

1170

What is a IdentityMapper and IdentityReducer in MapReduce ?

1005

Explain Working of MapReduce?

1036

Write a Mapreduce Program for Character Count ?

1102

how to proceed to write your first mapreducer program?

1427

Developing a MapReduce Application?

1028

Different ways of debugging a job in MapReduce?

1160

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

956

How does MapReduce framework view its input internally?

928

What are the steps involved in MapReduce framework?

1057

What is the Job interface in MapReduce framework?

963

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

1137

What is the core of the job in MapReduce framework?

907

How Pig differs from MapReduce?

847