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Topic :: MapReduce





MapReduce Interview Questions
Questions Answers Views Company eMail

What is Mapper in Hadoop MapReduce?

 691

How to set mappers and reducers for MapReduce jobs?

 600

How to sort intermediate output based on values in MapReduce?

 625

Can we set the number of reducers to zero in MapReduce?

 667

Where sorting is done on mapper node or reducer node in MapReduce?

 625

Which Sorting algorithm is used in Hadoop MapReduce?

 562

What is the need of MapReduce?

 583

How to configure the number of the Combiner in MapReduce?

 592

How to change a number of mappers running on a slave in MapReduce?

 754

Is it mandatory to set input and output type/format in MapReduce?

 674

How to set the number of mappers for a MapReduce job?

 651

Define Writable data types in Hadoop MapReduce?

 600

What is shuffling and sorting in Hadoop MapReduce?

 588

Define the Use of MapReduce?

 608

How to handle record boundaries in Text files or Sequence files in MapReduce InputSplits?

 658



Related Topics


Un-Answered Questions { MapReduce }

What MapReduce framework consists of?

1057

Can we submit the mapreduce job from slave node?

1051

What is a IdentityMapper and IdentityReducer in MapReduce ?

901

Explain Working of MapReduce?

921

Write a Mapreduce Program for Character Count ?

1005

how to proceed to write your first mapreducer program?

1304

Developing a MapReduce Application?

900

Different ways of debugging a job in MapReduce?

1060

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

866

How does MapReduce framework view its input internally?

830

What are the steps involved in MapReduce framework?

932

What is the Job interface in MapReduce framework?

862

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

1048

What is the core of the job in MapReduce framework?

795

How Pig differs from MapReduce?

739