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Can we submit the mapreduce job from slave node?
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Explain what is shuffling in mapreduce?
What is a scarce system resource?
Can you tell us how many daemon processes run on a hadoop system?
what is NameNode in Hadoop?
What is the default value of map and reduce max attempts?
What is the fundamental difference between a MapReduce Split and a HDFS block?scale data processing?
Why the output of map tasks are stored (spilled ) into local disc and not in hdfs?
What is the difference between Reducer and Combiner in Hadoop MapReduce?
How many Reducers run for a MapReduce job?
How to specify more than one directory as input to the MapReduce Job?
What is shuffling and sorting in mapreduce?
How can we assure that the values regarding a particular key goes to the same reducer?
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