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What is Reducer in MapReduce?
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More MapReduce Interview Questions
Explain what are the basic parameters of a mapper?
What is Counter in MapReduce?
What is a "map" in Hadoop?
What is a distributed cache in mapreduce framework?
what happens when Hadoop spawned 50 tasks for a job and one of the task failed?
How to submit extra files(jars, static files) for MapReduce job during runtime?
What is a scarce system resource?
How do Hadoop MapReduce works?
What are ‘reduces’?
Explain the difference between a MapReduce InputSplit and HDFS block?
Why can aggregation not be done in Mapper in MapReduce?
What are combiners? When should I use a combiner in my MapReduce Job?
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