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What is the InputSplit in map reduce ?
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What happen if the number of the reducer is 0 in MapReduce?
What is a IdentityMapper and IdentityReducer in MapReduce ?
If reducers do not start before all mappers finish then why does the progress on mapreduce job shows something like map(50%) reduce(10%)? Why reducers progress percentage is displayed when mapper is not finished yet?
How to specify more than one directory as input in the Hadoop MapReduce Program?
How to set the number of mappers for a MapReduce job?
What is identity mapper and chain mapper?
Mention what is the next step after mapper or maptask?
What is the Job interface in MapReduce framework?
What combiners are and when you should utilize a combiner in a map reduce job?
How many InputSplits is made by a Hadoop Framework?
What is Distributed Cache in the MapReduce Framework?
How to get the single file as the output from MapReduce Job?
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