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In MapReduce Data Flow, when Combiner is called?
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Explain what combiners are and when you should use a combiner in a mapreduce job?
In MapReduce how to change the name of the output file from part-r-00000?
What are ‘reduces’?
When is the reducers are started in a MapReduce job?
What are the fundamental configurations parameters specified in map reduce?
Where the mapper's intermediate data will be stored?
Can you tell us how many daemon processes run on a hadoop system?
Explain the Reducer's reduce phase?
What do you mean by inputformat?
List out Hadoop's three configuration files?
how to proceed to write your first mapreducer program?
What are the main configuration parameters in a MapReduce program?
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