Why comparison of types is important for MapReduce?
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mapper or reducer?
What is the default input type in MapReduce?
Map reduce jobs take too long. What can be done to improve the performance of the cluster?
What is the data storage component used by Hadoop?
What is Hadoop Map Reduce ?
When Namenode is down what happens to job tracker?
What is shuffling and sorting in mapreduce?
What happen if the number of the reducer is 0 in MapReduce?
What can be optimum value for Reducer?
Explain what is the function of mapreduce partitioner?
Where is the output of Mapper written in Hadoop?
Is it possible to rename the output file?
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