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Point out the correct statement.(a) The number of sorted map outputs fetched into memory before being merged to disk(b) The memory threshold for fetched map outputs before an in-memory merge is finished(c) The percentage of memory relative to the maximum heap size in which map outputs may not be retained during the reduce(d) None of the mentioned |
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Answer» The correct choice is (a) The number of sorted map outputs fetched into memory before being merged to disk Easiest explanation: When the reduce begins, map outputs will be merged to disk until those that remain are under the resource limit this defines. |
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