Is Mapreduce Required For Impala? Will Impala Continue To Work As Expected If Mapreduce Is Stopped?
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With the help of two examples name the map and reduce function purpose
what is "map" and what is "reducer" in Hadoop?
Can there be no Reducer?
What is the difference between Reducer and Combiner in Hadoop MapReduce?
What is the need of MapReduce?
Why can aggregation not be done in Mapper in MapReduce?
what are the three modes in which Hadoop can be run?
When is it not recommended to use MapReduce paradigm for large scale data processing?
How is reporting controlled in hadoop?
What are the fundamental configurations parameters specified in map reduce?
What happen if the number of the reducer is 0 in MapReduce?
What can be optimum value for Reducer?
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