On Jul 1, 2011, at 8:51am, Ted Dunning wrote: > You have to watch out, however, because Hadoop wire format changes pretty > often.
Exactly. E.g. stock Hadoop 0.20.2 installed on a machine has problems talking to the JobTracker on a cluster running CDH3 u0, even though CHD3 is 0.20.2 + patches. -- Ken > > On Fri, Jul 1, 2011 at 7:21 AM, Xiaobo Gu <[email protected]> wrote: > >> I mean mahout using the higher version of Hadoop libraries connecting >> to a lower version of Hadoop cluster. >> >> On Fri, Jul 1, 2011 at 8:42 PM, Sean Owen <[email protected]> wrote: >>> Yes, it's still compatible. >>> >>> On Fri, Jul 1, 2011 at 1:35 PM, Xiaobo Gu <[email protected]> >> wrote: >>>> Hi, >>>> >>>> Since the trunk of Mahout has moved to Hadoop 0.20.203, can we still >>>> let Mahout connect to a lower version of Hadoop backend, such as >>>> 0.20.2? >>>> >>>> Regards, >>>> >>>> Xiaobo Gu >>>> >>> >> -------------------------- Ken Krugler +1 530-210-6378 http://bixolabs.com custom data mining solutions
