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What do you mean by shuffling and sorting in MapReduce?
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What is the Reducer used for?
what is "map" and what is "reducer" in Hadoop?
Why Mapreduce output written in local disk?
How hadoop mapreduce works?
Map reduce jobs are failing on a cluster that was just restarted. They worked before restart. What could be wrong?
For a job in Hadoop, is it possible to change the number of mappers to be created?
What is LazyOutputFormat in MapReduce?
How much space will the split occupy in Mapreduce?
How to set the number of mappers to be created in MapReduce?
What is a "reducer" in Hadoop?
Write a Mapreduce Program for Character Count ?
How does inputsplit in mapreduce determines the record boundaries correctly?
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