What is a mapreduce algorithm?
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In MapReduce how to change the name of the output file from part-r-00000?
Why is output file name in Hadoop MapReduce part-r-00000?
What is the sequence of execution of map, reduce, recordreader, split, combiner, partitioner?
What is Reducer in MapReduce?
List out Hadoop's three configuration files?
Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
What is the utility of using Writable Comparable Custom Class in Map Reduce code?
what is JobTracker in Hadoop? What are the actions followed by Hadoop?
When is it suggested to use a combiner in a MapReduce job?
How to overwrite an existing output file/dir during execution of Hadoop MapReduce jobs?
How to compress mapper output in Hadoop?
Explain what combiners are and when you should use a combiner in a mapreduce job?
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