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What counter in Hadoop MapReduce?
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what does the conf.setMapper Class do ?
Can we rename the output file?
Explain about the basic parameters of mapper and reducer function
How do you stop a running job gracefully?
Mention Hadoop core components?
Explain what is distributed cache in mapreduce framework?
What are the the issues associated with the map and reduce slots based mechanism in mapReduce?
What is a partitioner and how the user can control which key will go to which reducer?
How hadoop mapreduce works?
How to overwrite an existing output file during execution of mapreduce jobs?
Explain how do ‘map’ and ‘reduce’ work?
Describe what happens to a mapreduce job from submission to output?
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