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Topic :: MapReduce





MapReduce Interview Questions
Questions Answers Views Company eMail

Explain what does the conf.setMapper Class do in MapReduce?

 702

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

 811

What is a Speculative Execution in Hadoop MapReduce?

 695

Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.

 694

In MapReduce, ideally how many mappers should be configured on a slave?

 701

What counter in Hadoop MapReduce?

 692

What is SequenceFileInputFormat in Hadoop MapReduce?

 661

How many Mappers run for a MapReduce job in Hadoop?

 648

How many Mappers run for a MapReduce job?

 653

How do Hadoop MapReduce works?

 776

Why Mapper runs in heavy weight process and not in a thread in MapReduce?

 678

How many Reducers run for a MapReduce job?

 739

How to specify more than one directory as input to the MapReduce Job?

 734

How to set the number of mappers to be created in MapReduce?

 687

What is the sequence of execution of Mapper, Combiner, and Partitioner in MapReduce?

 889



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