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What is the difference between Reducer and Combiner in Hadoop MapReduce?
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When is it suggested to use a combiner in a MapReduce job?
Clarify what is shuffling in map reduce?
What is the need of MapReduce in Hadoop?
What do you mean by shuffling and sorting in MapReduce?
In mapreduce what is a scarce system resource? Explain?
Why do we need MapReduce during Pig programming?
How does MapReduce framework view its input internally?
What is a partitioner and how the user can control which key will go to which reducer?
Explain the input type/format in mapreduce by default?
What is shuffling and sorting in mapreduce?
What platform and Java version is required to run Hadoop?
What is LazyOutputFormat in MapReduce?
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