1. Categories >> Software >> Big Data >> Hadoop >> MapReduce
  2. Suggest New Category
MapReduce Interview Questions
Questions Answers Views Company eMail

What are the advantages of using mapreduce with hadoop?

 337

What do you know about nlineinputformat?

 399

Why the output of map tasks are stored (spilled ) into local disc and not in hdfs?

 371

What is the role of recordreader in hadoop mapreduce?

 458

What happens when the node running the map task fails before the map output has been sent to the reducer?

 369

Define speculative execution?

 397

Is it legal to set the number of reducer task to zero? Where the output will be stored in this case?

 373

What are the advantages of using map side join in mapreduce?

 341

What is a map side join?

 378

What is a combiner and where you should use it?

 352

When should you use sequencefileinputformat?

 384

What is the purpose of textinputformat?

 429

What is reduce side join in mapreduce?

 323

What do you mean by inputformat?

 351

What are the various configuration parameters required to run a mapreduce job?

 365

Post New MapReduce Questions

Un-Answered Questions { MapReduce }

Illustrate a simple example of the working of MapReduce.

380

How many Reducers run for a MapReduce job?

441

Explain what you understand by speculative execution

353

Where is Mapper output stored?

502

What is mapreduce algorithm?

323




How to create custom key and custom value in MapReduce Job?

352

what is "map" and what is "reducer" in Hadoop?

362

MapReduce Types and Formats and Setting up a Hadoop Cluster?

588

What is the need of MapReduce in Hadoop?

368

What do you mean by shuffling and sorting in MapReduce?

410

what daemons run on a master node and slave nodes?

382

What are the four basic parameters of a reducer?

368

In MapReduce how to change the name of the output file from part-r-00000?

383

What is Combiner in MapReduce?

366

Which Sorting algorithm is used in Hadoop MapReduce?

338

For More Un-Answered { MapReduce } Questions Click Here