Rather than implementing a multi-threaded reducer, why not simply increase the number of reducer tasks per machine via mapred.tasktracker.reduce.tasks.maximum, and increase the total number of reduce tasks per job via mapred.reduce.tasks to ensure that they're all filled. This will effectively utilize a higher number of cores.
- Aaron On Fri, Apr 10, 2009 at 11:12 AM, Sagar Naik <sn...@attributor.com> wrote: > Hi, > I would like to implement a Multi-threaded reducer. > As per my understanding , the system does not have one coz we expect the > output to be sorted. > > However, in my case I dont need the output sorted. > > Can u pl point to me any other issues or it would be safe to do so > > -Sagar >
