In MapReduce, ideally how many mappers should be configured on a slave?
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How to write a custom partitioner for a Hadoop MapReduce job?
How do Hadoop MapReduce works?
What happens when a DataNode fails during the write process?
What are the fundamental configurations parameters specified in map reduce?
What do you mean by shuffling and sorting in MapReduce?
Explain what is “map” and what is "reducer" in hadoop?
What is the relation between MapReduce and Hive?
What combiners are and when you should use a combiner in a mapreduce job?
What is the function of mapreducer partitioner?
Explain what does the conf.setmapper class do?
Why comparison of types is important for MapReduce?
What can be optimum value for Reducer?
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