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Topic :: MapReduce





MapReduce Interview Questions
Questions Answers Views Company eMail

What is Reducer in MapReduce?

 766

How many Reducers run for a MapReduce job in Hadoop?

 626

What is MapReduce in Hadoop?

 687

Why Hadoop MapReduce?

 697

Why can aggregation not be done in Mapper in MapReduce?

 644

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

 724

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

 716

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

 685

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

 712

What are the main configuration parameters in a MapReduce program?

 673

What do you mean by shuffling and sorting in MapReduce?

 749

What is Combiner in MapReduce?

 687

Where sorting is done in Hadoop MapReduce Job?

 681

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

 706

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

 864



Related Topics


Un-Answered Questions { MapReduce }

What MapReduce framework consists of?

1142

Can we submit the mapreduce job from slave node?

1160

What is a IdentityMapper and IdentityReducer in MapReduce ?

989

Explain Working of MapReduce?

1026

Write a Mapreduce Program for Character Count ?

1094

how to proceed to write your first mapreducer program?

1412

Developing a MapReduce Application?

1015

Different ways of debugging a job in MapReduce?

1142

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

947

How does MapReduce framework view its input internally?

917

What are the steps involved in MapReduce framework?

1041

What is the Job interface in MapReduce framework?

949

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

1128

What is the core of the job in MapReduce framework?

896

How Pig differs from MapReduce?

835