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What is MapReduce in Hadoop?
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What is identity mapper and identity reducer?
Write a short note on the disadvantages of mapreduce
What combiners is and when you should use a combiner in a MapReduce Job?
Why Mapreduce output written in local disk?
what daemons run on a master node and slave nodes?
Write a Mapreduce Program for Character Count ?
What are the various configuration parameters required to run a mapreduce job?
How to specify more than one directory as input in the Hadoop MapReduce Program?
How much space will the split occupy in Mapreduce?
what is JobTracker in Hadoop? What are the actions followed by Hadoop?
What is the relationship between Job and Task in Hadoop?
What is Mapper in Hadoop MapReduce?
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