Hi, I would like to chain multiple reducers without an intervening map phase. I looked at ChainReducer but it seems to support chains of the for M+RM*. What I am looking for is M+R*. What would be the mos t efficient way to do it. Of course, I could use an IdentityMapper in between, but I don;t want to introduce an unnecessary mapper. I want to start the next shuffle-sort-reduce cycle right after the first reducer does its job. Is it possible? I am using hadoop 0.20.2-append.
Regards,
