Lets move this discussion to MR-1639, MR2 would allow for a really cool optimization there (which I hope works, see details on the jira).
On Oct 19, 2011, at 2:42 PM, Zheng Shao wrote: > Google's Tenzing paper mentioned that they modified MR to make sorting in > reducer optional: > http://static.googleusercontent.com/external_content/untrusted_dlcp/research.google.com/en/us/pubs/archive/37200.pdf > > Is there any plan to support that in MR 2.0? > > Zheng
