Explanation:Task setup takes a while, so it is best if the maps take at least a minute to execute. 8. The number of reduces for the job is set by the user via :
A. JobConf.setNumTasks(int)
B. JobConf.setNumReduceTasks(int)
C. JobConf.setNumMapTasks(int)
D. All of the mentioned
Answer:A
Explanation:Task setup takes a while, so it is best if the maps take at least a minute to execute. 8. The number of reduces for the job is set by the user via :
A. JobConf.setNumTasks(int) B. JobConf.setNumReduceTasks(int) C. JobConf.setNumMapTasks(int) D. All of the mentioned
Explanation:Reducer has 3 primary phases: shuffle, sort and reduce. 9. The framework groups Reducer inputs by key in _________ stage.