Explain how mapreduce works.
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What is Reducer in MapReduce?
Define Writable data types in Hadoop MapReduce?
how to proceed to write your first mapreducer program?
What is Text Input Format?
What are ‘reduces’?
When is it suggested to use a combiner in a MapReduce job?
What combiners are and when you should utilize a combiner in a map reduce job?
What is reduce side join in mapreduce?
What is streaming?
What is an input reader in reference to mapreduce?
Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?
Define Writable data types in MapReduce?
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