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Topic :: MapReduce





MapReduce Interview Questions
Questions Answers Views Company eMail

What is Mapper in Hadoop MapReduce?

 733

How to set mappers and reducers for MapReduce jobs?

 635

How to sort intermediate output based on values in MapReduce?

 655

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

 703

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

 673

Which Sorting algorithm is used in Hadoop MapReduce?

 599

What is the need of MapReduce?

 632

How to configure the number of the Combiner in MapReduce?

 625

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?

 732

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

 687

Define Writable data types in Hadoop MapReduce?

 638

What is shuffling and sorting in Hadoop MapReduce?

 627

Define the Use of MapReduce?

 666

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

 699



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?

868

What are the steps involved in MapReduce framework?

980

What is the Job interface in MapReduce framework?

907

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