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MapReduce Interview Questions
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Un-Answered Questions { MapReduce }
Is it legal to set the number of reducer task to zero? Where the output will be stored in this case?
What is the default value of map and reduce max attempts?
What are the main components of MapReduce Job?
How to optimize MapReduce Job?
what job does the conf class do?
How to set which framework would be used to run mapreduce program?
Explain the general mapreduce algorithm
Explain the Reducer's Sort phase?
Why can aggregation not be done in Mapper in MapReduce?
mapper or reducer?
How data is spilt in Hadoop?
what does the conf.setMapper Class do ?
What is shuffleing in mapreduce?
How to set the number of reducers?
What is the utility of using Writable Comparable Custom Class in Map Reduce code?
