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Topic :: MapReduce





MapReduce Interview Questions
Questions Answers Views Company eMail

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

 653

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

 770

What is a Speculative Execution in Hadoop MapReduce?

 653

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

 651

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

 664

What counter in Hadoop MapReduce?

 643

What is SequenceFileInputFormat in Hadoop MapReduce?

 627

How many Mappers run for a MapReduce job in Hadoop?

 611

How many Mappers run for a MapReduce job?

 609

How do Hadoop MapReduce works?

 722

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

 638

How many Reducers run for a MapReduce job?

 689

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

 697

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

 638

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

 851



Related Topics


Un-Answered Questions { MapReduce }

What MapReduce framework consists of?

1094

Can we submit the mapreduce job from slave node?

1105

What is a IdentityMapper and IdentityReducer in MapReduce ?

945

Explain Working of MapReduce?

971

Write a Mapreduce Program for Character Count ?

1049

how to proceed to write your first mapreducer program?

1343

Developing a MapReduce Application?

966

Different ways of debugging a job in MapReduce?

1106

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

901

How does MapReduce framework view its input internally?

869

What are the steps involved in MapReduce framework?

981

What is the Job interface in MapReduce framework?

908

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

1092

What is the core of the job in MapReduce framework?

849

How Pig differs from MapReduce?

799