Card 11 / 19: 3. [8 points]: Ben Bitdiddle is using a MapReduce cluster (as described in reading #8) to process some data. He finds that some of his programs are running slowly and needs your help to understand which performance enhancements to try. For each of the following MapReduce configurations and suggested enhancements, circle True if the statement about the enhancement is true, and False otherwise.If some tasks on some workers take much longer than others to complete, and these “stragglers” are the bottleneck in the system, then allocating additional nodes to these straggler tasks will definitely improve performance.
A)
True
B)
False
Answer:
B) False
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Computer System Engineering 6.033 Spring 2006
Author:
Prof.Samuel MaddenProfessor
MIT Massachusetts Institute of Technology
USA
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