What is the need of key-value pair to process the data in MapReduce?
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What is Hadoop Map Reduce ?
What is the need of MapReduce?
Explain the process of spilling in MapReduce?
How does Mappers run method works?
Define Writable data types in Hadoop MapReduce?
How many InputSplits is made by a Hadoop Framework?
How many Mappers run for a MapReduce job?
What happens when a DataNode fails during the write process?
Explain the Reducer's Sort phase?
Which are the methods in the mapper interface?
Explain the input type/format in mapreduce by default?
How to compress mapper output in Hadoop?