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Topic :: MapReduce





MapReduce Interview Questions
Questions Answers Views Company eMail

What is Mapper in Hadoop MapReduce?

 692

How to set mappers and reducers for MapReduce jobs?

 604

How to sort intermediate output based on values in MapReduce?

 627

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

 670

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

 626

Which Sorting algorithm is used in Hadoop MapReduce?

 565

What is the need of MapReduce?

 584

How to configure the number of the Combiner in MapReduce?

 593

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

 756

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

 675

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

 654

Define Writable data types in Hadoop MapReduce?

 603

What is shuffling and sorting in Hadoop MapReduce?

 589

Define the Use of MapReduce?

 611

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

 662



Related Topics


Un-Answered Questions { MapReduce }

What MapReduce framework consists of?

1060

Can we submit the mapreduce job from slave node?

1053

What is a IdentityMapper and IdentityReducer in MapReduce ?

904

Explain Working of MapReduce?

925

Write a Mapreduce Program for Character Count ?

1006

how to proceed to write your first mapreducer program?

1308

Developing a MapReduce Application?

904

Different ways of debugging a job in MapReduce?

1062

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

869

How does MapReduce framework view its input internally?

833

What are the steps involved in MapReduce framework?

934

What is the Job interface in MapReduce framework?

865

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

1051

What is the core of the job in MapReduce framework?

796

How Pig differs from MapReduce?

742