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What is the job of blend () and repartition () in Map Reduce?
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What is Reducer in MapReduce?
How would you tackle calculating the number of unique visitors for each hour by mining a huge apache log? You can use post processing on the output of the mapreduce job.
What is mapper in map reduce?
How to specify more than one directory as input to the MapReduce Job?
How hadoop mapreduce works?
How to sort intermediate output based on values in MapReduce?
What is the key- value pair in MapReduce?
What is SequenceFileInputFormat?
what does the text input format do?
Explain the differences between a combiner and reducer
Define the Use of MapReduce?
What is a IdentityMapper and IdentityReducer in MapReduce ?
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