What is the difference between Reducer and Combiner in Hadoop MapReduce?

Question Posted / mayank rastogi

No Answer is Posted For this Question
Be the First to Post Answer

More MapReduce Interview Questions

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

What are the steps involved in MapReduce framework?

what daemons run on a master node and slave nodes?

what are the basic parameters of a Mapper?

How can you add the arbitrary key-value pairs in your mapper?

Different ways of debugging a job in MapReduce?

How many Reducers run for a MapReduce job in Hadoop?

What is the relation between MapReduce and Hive?

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

What is Shuffling and Sorting in a MapReduce?

what is a Task Tracker in Hadoop?

When is it not recommended to use MapReduce paradigm for large scale data processing?

For more MapReduce Interview Questions Click Here