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Can we set the number of reducers to zero in MapReduce?
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List out Hadoop's three configuration files?
Explain what is “map” and what is "reducer" in hadoop?
Map reduce jobs take too long. What can be done to improve the performance of the cluster?
What is a partitioner and how the user can control which key will go to which reducer?
What is the difference between Reducer and Combiner in Hadoop MapReduce?
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Can there be no Reducer?
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What is Hadoop Map Reduce ?
Explain what is the function of mapreduce partitioner?
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