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What is the relation between MapReduce and Hive?
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What is a IdentityMapper and IdentityReducer in MapReduce ?
What is the Hadoop MapReduce API contract for a key and value Class?
What are the main components of MapReduce Job?
how Hadoop is different from other data processing tools?
List out Hadoop's three configuration files?
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What is shuffling in mapreduce?
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