____________ 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:A
____________ 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
Explanation:io.sort.factor limits the number of open files and compression codecs during the merge. 2. Point out the correct statement :