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Topic :: MapReduce





MapReduce Interview Questions
Questions Answers Views Company eMail

What is Mapper in Hadoop MapReduce?

 731

How to set mappers and reducers for MapReduce jobs?

 634

How to sort intermediate output based on values in MapReduce?

 655

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

 701

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

 671

Which Sorting algorithm is used in Hadoop MapReduce?

 598

What is the need of MapReduce?

 631

How to configure the number of the Combiner in MapReduce?

 624

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

 789

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

 730

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

 686

Define Writable data types in Hadoop MapReduce?

 638

What is shuffling and sorting in Hadoop MapReduce?

 625

Define the Use of MapReduce?

 664

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

 698



Related Topics


Un-Answered Questions { MapReduce }

What MapReduce framework consists of?

1094

Can we submit the mapreduce job from slave node?

1104

What is a IdentityMapper and IdentityReducer in MapReduce ?

943

Explain Working of MapReduce?

969

Write a Mapreduce Program for Character Count ?

1047

how to proceed to write your first mapreducer program?

1342

Developing a MapReduce Application?

963

Different ways of debugging a job in MapReduce?

1105

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

899

How does MapReduce framework view its input internally?

867

What are the steps involved in MapReduce framework?

979

What is the Job interface in MapReduce framework?

906

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

1091

What is the core of the job in MapReduce framework?

848

How Pig differs from MapReduce?

797