When do reducers play their role in a mapreduce task?
Submitted by: AdministratorThe reducers in a mapreduce job do not begin before all the map jobs are completed. Once all the map jobs are completed the reducers begin copying the intermediate key-value pairs from the mappers. Overall reducers start working as soon as the mappers are ready with key-value pairs.
Submitted by: Administrator
Submitted by: Administrator
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