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What is the Reducer used for?
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What are the key differences between Pig vs MapReduce?
Does Partitioner run in its own JVM or shares with another process?
What is LazyOutputFormat in MapReduce?
what is distributed cache in mapreduce framework?
In MapReduce Data Flow, when Combiner is called?
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What is Combiner in MapReduce?
How to submit extra files(jars, static files) for Hadoop MapReduce job during runtime?
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