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What is the difference between a MapReduce InputSplit and HDFS block?
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What is mapreduce algorithm?
How does MapReduce framework view its input internally?
Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
Explain combiners.
what daemons run on a master node and slave nodes?
What are mapreduce new and old apis while writing map reduce program?. Explain how it works
Is Mapreduce Required For Impala? Will Impala Continue To Work As Expected If Mapreduce Is Stopped?
Define the Use of MapReduce?
Explain the process of spilling in Hadoop MapReduce?
How do reducers communicate with each other?
What is identity mapper and reducer? In which cases can we use them?
How hadoop mapreduce works?
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