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How to submit extra files(jars,static files) for MapReduce job during runtime in Hadoop?
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How do ‘map’ and ‘reduce’ work?
what are the basic parameters of a Mapper?
What are ‘maps’ and ‘reduces’?
When is the reducers are started in a MapReduce job?
What is an input reader in reference to mapreduce?
What do you understand by mapreduce?
What is the relationship between Job and Task in Hadoop?
What happens when a DataNode fails during the write process?
Is it legal to set the number of reducer task to zero? Where the output will be stored in this case?
Explain what is “map” and what is "reducer" in hadoop?
When is it suggested to use a combiner in a MapReduce job?
Can MapReduce program be written in any language other than Java?
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