Define Writable data types in MapReduce?
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List out Hadoop's three configuration files?
When is it suggested to use a combiner in a MapReduce job?
Explain task granularity
Mention when to use Map reduce mode?
What is the default input type in MapReduce?
Is there any point of learning mapreduce, then?
Where the mapper's intermediate data will be stored?
Where sorting is done on mapper node or reducer node in MapReduce?
What happen if the number of the reducer is 0 in MapReduce?
when do reducers play their role in a mapreduce task?
What is the job of blend () and repartition () in Map Reduce?
Is it possible to search for files using wildcards?
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