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What is the difference between map and reduce?
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What does conf.setmapper class do?
How to create a custom key and custom value in MapReduce Job?
Define the Use of MapReduce?
When is it suggested to use a combiner in a MapReduce job?
What is the Job interface in MapReduce framework?
What is Reducer in MapReduce?
What combiners are and when you should utilize a combiner in a map reduce job?
How to get the single file as the output from MapReduce Job?
How to optimize MapReduce Job?
what happens when Hadoop spawned 50 tasks for a job and one of the task failed?
What happens when a DataNode fails during the write process?
How is Spark not quite the same as MapReduce? Is Spark quicker than MapReduce?
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