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What is InputFormat in Hadoop MapReduce?
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What is shuffling and sorting in Hadoop MapReduce?
Explain the difference between a MapReduce InputSplit and HDFS block?
What counter in Hadoop MapReduce?
Detail description of the Reducer phases?
Explain what is the function of mapreduce partitioner?
How will you submit extra files or data ( like jars, static files, etc. ) For a mapreduce job during runtime?
Why is output file name in Hadoop MapReduce part-r-00000?
What is Output Format in MapReduce?
What happens when the node running the map task fails before the map output has been sent to the reducer?
How is Spark not quite the same as MapReduce? Is Spark quicker than MapReduce?
Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
What is difference between an input split and hdfs block?
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