1.

____________ specifies the number of segments on disk to be merged at the same time.(a) mapred.job.shuffle.merge.percent(b) mapred.job.reduce.input.buffer.percen(c) mapred.inmem.merge.threshold(d) io.sort.factor

Answer» The correct option is (d) io.sort.factor

The explanation is: io.sort.factor limits the number of open files and compression codecs during the merge.


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