What is Reduce only jobs?
Answer / bindu
It takes the output of map task as input and then do reduce work.
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What is the next step after Mapper or MapTask?
Clarify what combiners are and when you should utilize a combiner in a map reduce job?
What are the various input and output types supported by mapreduce?
A number of combiners can be changed or not in MapReduce?
Explain combiners.
How can you add the arbitrary key-value pairs in your mapper?
Which are the methods in the mapper interface?
Define Writable data types in MapReduce?
Different ways of debugging a job in MapReduce?
What are the disservices of utilizing Apache Spark over Hadoop MapReduce?
What do you mean by data locality?
What is the InputSplit in map reduce ?