How to configure the number of the Combiner in MapReduce?
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What are mapreduce new and old apis while writing map reduce program?. Explain how it works
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Clarify what is shuffling in map reduce?
How to set the number of mappers for a MapReduce job?
what happens when Hadoop spawned 50 tasks for a job and one of the task failed?
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What is a combiner and where you should use it?
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