Mike, I didn't understand - why would I not need reducer in hbase m/r? there can be cases right. My use case is very similar to Sujee's blog on frequency counting - http://sujee.net/tech/articles/hadoop/hbase-map-reduce-freq-counter/ So in the reducer, I can do all the aggregations. Is there a better way? I can think of another way - to use increments in the map job itself. i have to figure out if thats possible though.
thanks On Tue, Feb 28, 2012 at 7:44 AM, Michel Segel <[email protected]>wrote: > Yes you can do it. > But why do you have a reducer when running a m/r job against HBase? > > The trick in writing multiple rows... You do it independently of the > output from the map() method. > > > Sent from a remote device. Please excuse any typos... > > Mike Segel > > On Feb 28, 2012, at 8:34 AM, T Vinod Gupta <[email protected]> wrote: > > > while doing map reduce on hbase tables, is it possible to do multiple > puts > > in the reducer? what i want is a way to be able to write multiple rows. > if > > its not possible, then what are the other alternatives? i mean like > > creating a wider table in that case. > > > > thanks >
