Q. . . . . . . . . is percentage of memory relative to the maximum heap size in which map outputs may be retained during the reduce.
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(A)
mapred.job.shuffle.merge.percent
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(B)
mapred.job.reduce.input.buffer.percen
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(C)
mapred.inmem.merge.threshold
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(D)
io.sort.factor
✅ Correct Answer: (B)
mapred.job.reduce.input.buffer.percen