What is difference between a MapReduce InputSplit and HDFS block
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Is there any point of learning mapreduce, then?
Explain what is “map” and what is "reducer" in hadoop?
What is partitioner and its usage?
How many InputSplits is made by a Hadoop Framework?
Can there be no Reducer?
What is reduce side join in mapreduce?
How many Reducers run for a MapReduce job?
Clarify what is shuffling in map reduce?
Define Writable data types in Hadoop MapReduce?
Detail description of the Reducer phases?
What counter in Hadoop MapReduce?
How does inputsplit in mapreduce determines the record boundaries correctly?
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