Topic :: MapReduce





MapReduce Interview Questions
Questions Answers Views Company eMail

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

378

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

473

What is a Speculative Execution in Hadoop MapReduce?

369

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

382

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

379

What counter in Hadoop MapReduce?

378

What is SequenceFileInputFormat in Hadoop MapReduce?

366

How many Mappers run for a MapReduce job in Hadoop?

365

How many Mappers run for a MapReduce job?

353

How do Hadoop MapReduce works?

418

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

376

How many Reducers run for a MapReduce job?

444

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

432

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

357

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

424




Related Topics


Un-Answered Questions { MapReduce }

What MapReduce framework consists of?

761


Can we submit the mapreduce job from slave node?

840


What is a IdentityMapper and IdentityReducer in MapReduce ?

631


Explain Working of MapReduce?

660


Write a Mapreduce Program for Character Count ?

702






how to proceed to write your first mapreducer program?

1023


Developing a MapReduce Application?

650


Different ways of debugging a job in MapReduce?

799


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

650


How does MapReduce framework view its input internally?

588


What are the steps involved in MapReduce framework?

607


What is the Job interface in MapReduce framework?

637


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

841


What is the core of the job in MapReduce framework?

578


How Pig differs from MapReduce?

564