Share code from your mapper? Check to see if there are any errors on the job tracker reports that might indicate the inability to find the class.
James. On 2011-02-02, at 2:23 PM, Christian Kunz wrote: > Without seeing the source code of the reduce method of the InvIndexReduce > class > my best guess would be that the signature is incorrect. I saw this happen > when migrating from old to new api: > > protected void reduce(KEYIN key, Iterable<VALUEIN> values, Context context) > > (Iterable, not Iterator as in the old api) > > -Christian > > > On Feb 2, 2011, at 12:22 PM, Marco Didonna wrote: > >> Hello everybody, >> I am experiencing a weird issue: I have written a small hadoop program >> and I am launching it using this https://gist.github.com/808297 >> JobDriver. Strangely InvIndexReducer is never invoked and the default >> reducer kicks in. I really cannot understand where the problem could be: >> as you can see I am using the new version of the api, (hadoop >= 0.20). >> >> Any help is appreciated >> >> MD >> >
