How many Reducers run for a MapReduce job in Hadoop?
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What is Combiner in MapReduce?
How many Reducers run for a MapReduce job?
what are the most common input formats defined in Hadoop?
What happen if the number of the reducer is 0 in MapReduce?
What is the next step after Mapper or MapTask?
Explain how mapreduce works.
Detail description of the Reducer phases?
What are the various input and output types supported by mapreduce?
What can be optimum value for Reducer?
What are the disservices of utilizing Apache Spark over Hadoop MapReduce?
What do you know about nlineinputformat?
What are mapreduce new and old apis while writing map reduce program?. Explain how it works
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