What happen if the number of the reducer is 0 in MapReduce?

652

Define the purpose of the partition function in mapreduce framework

663

What is the fundamental difference between a MapReduce Split and a HDFS block?scale data processing?

876

With the help of two examples name the map and reduce function purpose

638

How is Spark not quite the same as MapReduce? Is Spark quicker than MapReduce?

604

Explain combiners.

629

What is a IdentityMapper and IdentityReducer in MapReduce ?

945

how JobTracker schedules a task ?

850

What is shuffling in mapreduce?

607

What is partitioning in MapReduce?

717

what is JobTracker in Hadoop? What are the actions followed by Hadoop?

769

How many Reducers run for a MapReduce job in Hadoop?

590

What is the difference between Job and Task in MapReduce?

614

How does MapReduce framework view its input internally?

868

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

650