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What is the difference between Job and Task in MapReduce?
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when do reducers play their role in a mapreduce task?
What is a scarce system resource?
Where sorting is done on mapper node or reducer node in MapReduce?
In Map Reduce why map write output to Local Disk instead of HDFS?
How to write MapReduce Programs?
What is the need of MapReduce in Hadoop?
Can we submit the mapreduce job from slave node?
What are the various input and output types supported by mapreduce?
When is it suggested to use a combiner in a MapReduce job?
Why do we need MapReduce during Pig programming?
Where is the output of Mapper written in Hadoop?
What is difference between a MapReduce InputSplit and HDFS block
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