What is MapReduce? What are the syntax you use to run a MapReduce program?
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What are the key differences between Pig vs MapReduce?
what is a Task Tracker in Hadoop?
Explain what combiners are and when you should use a combiner in a mapreduce job?
What is a MapReduce Combiner?
Explain slot in Hadoop Map-Reduce v1?
What are the the issues associated with the map and reduce slots based mechanism in mapReduce?
how Hadoop is different from other data processing tools?
What are the data components used by Hadoop?
What are combiners? When should I use a combiner in my MapReduce Job?
What is the difference between map and reduce?
what are the basic parameters of a Mapper?
How to overwrite an existing output file during execution of mapreduce jobs?
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