On 02/03/2011 11:47 AM, madhu phatak wrote:
> The.Definitive.Guide book
I do have that book...is based on the old api
Read Oreilly.Hadoop.The.Definitive.Guide book. It points out the changes in
new and old api.
On Thu, Feb 3, 2011 at 3:53 AM, Christian Kunz wrote:
> I don't know of a transition guide, but I found a tutorial based on the new
> api:
>
> http://hadoop.apache.org/mapreduce/docs/current/mapred_tutor
I don't know of a transition guide, but I found a tutorial based on the new api:
http://hadoop.apache.org/mapreduce/docs/current/mapred_tutorial.html
I did not use it, but it might be useful.
BTW, you could use the
@Override
annotation when overriding any method to let the compiler detect issu
On 02/02/2011 10:23 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 value
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 b
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 values, Context context)
(Iterable, not Iterator as in the old
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 y
