What is the key- value pair in Hadoop MapReduce?
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How is Spark not quite the same as MapReduce? Is Spark quicker than MapReduce?
How does inputsplit in mapreduce determines the record boundaries correctly?
Explain about the basic parameters of mapper and reducer function
What is OutputCommitter?
How many Reducers run for a MapReduce job in Hadoop?
How to specify more than one directory as input to the MapReduce Job?
What can be optimum value for Reducer?
What combiners is and when you should use a combiner in a MapReduce Job?
what is the Hadoop MapReduce APIs contract for a key and value class?
Explain what does the conf.setMapper Class do in MapReduce?
How to set the number of mappers for a MapReduce job?
What is the function of mapreduce partitioner?
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