OK and he mentioned that 10 mappers were running, when it ought to be able to use several per machine. The # of mappers is a function of the input size really, so probably needs to turn down the max file split size to induce more mappers?
On Wed, Mar 6, 2013 at 11:16 AM, Sebastian Schelter <ssc.o...@googlemail.com > wrote: > Btw, all important jobs in ALS are map-only, so its the number of map > slotes that counts. > >
