MapReduce Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

MapReduce Interview Questions

Questions Answers Views Company eMail

Define the purpose of the partition function in mapreduce framework

630

What are the various input and output types supported by mapreduce?

566

Explain task granularity

592

Explain the general mapreduce algorithm

600

What is mapper in map reduce?

597

What happens if the quantity of the reducer is 0 in mapreduce?

557

Clarify what combiners are and when you should utilize a combiner in a map reduce job?

559

Clarify what is shuffling in map reduce?

595

What are the fundamental configurations parameters specified in map reduce?

567

What combiners are and when you should utilize a combiner in a map reduce job?

560

What are the four essential parameters of a mapper?

604

Mention what is the hadoop mapreduce apis contract for a key and value class?

638

Explain what combiners are and when you should use a combiner in a mapreduce job?

572

What is the function of mapreduce partitioner?

588

What combiners are and when you should use a combiner in a mapreduce job?

552

Post New MapReduce Questions

Un-Answered Questions { MapReduce }

what is Speculative Execution?

786

mapper or reducer?

935

What is a mapreduce algorithm?

580

What is Shuffling and Sorting in a MapReduce?

631

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

607

what happens when Hadoop spawned 50 tasks for a job and one of the task failed?

652

What is the utility of using Writable Comparable Custom Class in Map Reduce code?

944

What is an identity mapper and identity reducer?

567

What is shuffleing in mapreduce?

598

How much space will the split occupy in Mapreduce?

634

How many Reducers run for a MapReduce job?

647

What is KeyValueTextInputFormat in Hadoop MapReduce?

764

List out Hadoop's three configuration files?

552

What is difference between a MapReduce InputSplit and HDFS block

632

Why Hadoop MapReduce?

626

For More Un-Answered { MapReduce } Questions Click Here