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Why the output of map tasks are stored (spilled ) into local disc and not in hdfs?
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How to set which framework would be used to run mapreduce program?
What is the best way to copy files between HDFS clusters?
How many Mappers run for a MapReduce job?
When the reducers are are started in a mapreduce job?
How much space will the split occupy in Mapreduce?
How to set the number of reducers?
What are the advantages of using mapreduce with hadoop?
Explain task granularity
What happens when the node running the map task fails before the map output has been sent to the reducer?
How to submit extra files(jars,static files) for MapReduce job during runtime in Hadoop?
What is a TaskInstance?
Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?
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