Cloudera
CCD-333 · Question #24
In a large MapReduce job with m mappers and r reducers, how many distinct copy operations will there be in the sort/shuffle phase?
The correct answer is D. mxr(i.e.,m multiplied by r). See the full explanation below for the reasoning.
Question
In a large MapReduce job with m mappers and r reducers, how many distinct copy operations will there be in the sort/shuffle phase?
Options
- Am
- Br
- Cm+r (i.e., m plus r)
- Dmxr(i.e.,m multiplied by r)
- Emr(i.e., m to the power of r)
How the community answered
(51 responses)- A6% (3)
- B2% (1)
- C2% (1)
- D78% (40)
- E12% (6)
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