What are mapreduce new and old apis while writing map reduce program?. Explain how it works
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What are the four basic parameters of a reducer?
what are the main configuration parameters that user need to specify to run Mapreduce Job ?
Is it mandatory to set input and output type/format in MapReduce?
What are mapreduce new and old apis while writing map reduce program?. Explain how it works
Can we rename the output file?
What is Text Input Format?
What combiners are and when you should utilize a combiner in a map reduce job?
Whether the output of mapper or output of partitioner written on local disk?
What is a distributed cache in mapreduce framework?
Clarify what combiners are and when you should utilize a combiner in a map reduce job?
Which Sorting algorithm is used in Hadoop MapReduce?
How does inputsplit in mapreduce determines the record boundaries correctly?
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