On Sun, Aug 16, 2009 at 10:00 AM, Zheng Shao<[email protected]> wrote: > Does hadoop have the capability of merging multiple mappers(on the same > node) output into a single one, to speed up the shuffling phase? Is there a > JIRA that I can find more information about it?
Do you mean outputs from multiple mapper tasks or multiple mapper functions? Could Combiner help? -- Zhong Wang
