Given a list of "typical" times observed in a series of jobs of the same FlowStep, aggregates these times into a single estimate of the time that a "typical" reducer took in a "typical" job.
Given a list of "typical" times observed in a series of jobs of the same FlowStep, aggregates these times into a single estimate of the time that a "typical" reducer took in a "typical" job. Suggested implementation: mean or median.
Given a list of times that each reducer took in a certain FlowStep, aggregates these times into a single estimate of the time that a "typical" reducer took.
Given a list of times that each reducer took in a certain FlowStep, aggregates these times into a single estimate of the time that a "typical" reducer took. Suggested implementation: mean or median.