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Topic :: MapReduce





MapReduce Interview Questions
Questions Answers Views Company eMail

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

 600

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

 716

What is a Speculative Execution in Hadoop MapReduce?

 617

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

 607

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

 615

What counter in Hadoop MapReduce?

 603

What is SequenceFileInputFormat in Hadoop MapReduce?

 588

How many Mappers run for a MapReduce job in Hadoop?

 570

How many Mappers run for a MapReduce job?

 563

How do Hadoop MapReduce works?

 672

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

 591

How many Reducers run for a MapReduce job?

 647

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

 658

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

 602

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

 794



Related Topics


Un-Answered Questions { MapReduce }

What MapReduce framework consists of?

1057

Can we submit the mapreduce job from slave node?

1050

What is a IdentityMapper and IdentityReducer in MapReduce ?

900

Explain Working of MapReduce?

920

Write a Mapreduce Program for Character Count ?

1004

how to proceed to write your first mapreducer program?

1304

Developing a MapReduce Application?

900

Different ways of debugging a job in MapReduce?

1059

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

865

How does MapReduce framework view its input internally?

829

What are the steps involved in MapReduce framework?

931

What is the Job interface in MapReduce framework?

861

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

1047

What is the core of the job in MapReduce framework?

794

How Pig differs from MapReduce?

738