Which of the following statements is not correct? a. A mapper in Hadoop maps each element in
Question:
Which of the following statements is not correct?
a. A mapper in Hadoop maps each element in a collection to one or more output elements.
b. A reducer in Hadoop reduces a collection of elements to one or more output elements.
c. Reducer workers in Hadoop will start once all mapper workers have finished.
d. A MapReduce pipeline in Hadoop can include an optional Sorter to sort the final output.
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c Reducer workers ...View the full answer
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Related Book For 
Principles Of Database Management The Practical Guide To Storing Managing And Analyzing Big And Small Data
ISBN: 9781107186125
1st Edition
Authors: Wilfried Lemahieu, Seppe Vanden Broucke, Bart Baesens
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