How will you submit extra files or data ( like jars, static files, etc. ) For a mapreduce job during runtime?
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Mention what is the next step after mapper or maptask?
When should you use a reducer?
What are the fundamental configurations parameters specified in map reduce?
How does Mappers run method works?
What is a combiner and where you should use it?
What do you mean by shuffling and sorting in MapReduce?
What is map/reduce job in hadoop?
A number of combiners can be changed or not in MapReduce?
what is NameNode in Hadoop?
How is reporting controlled in hadoop?
What is the need of MapReduce in Hadoop?
Explain about the basic parameters of mapper and reducer function