What is a "reducer" in Hadoop?
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What is MapReduce?
Define MapReduce?
What is the next step after Mapper or MapTask?
How many numbers of reducers run in Map-Reduce Job?
Where is Mapper output stored?
What are the benefits of Spark over MapReduce?
What is Output Format in MapReduce?
Explain the Reducer's Sort phase?
List out Hadoop's three configuration files?
What is the difference between Reducer and Combiner in Hadoop MapReduce?
Explain the Reducer's reduce phase?
How can we control particular key should go in a specific reducer?
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