Yes, i have this less than descriptive exception too:

https://issues.apache.org/jira/browse/NUTCH-1100


On Tuesday 30 August 2011 02:28:18 Markus Jelsma wrote:
> Thanks for the reminder as i believe this is an actual issue! I've got some
> indices that cannot be deduplicated from Nutch and die without giving a
> proper clue.
> 
> 
> I'll reproduce and report back on it. I know it's not a problem of not
> having the correct fields marked as STORED since that once index has all
> fields used by dedup marked as STORED.
> 
> Strange..
> 
> > Hi Zhao,
> > 
> > Do you have anymore verbose log info from hadoop.log, I have never worked
> > with Nutch 0.9 but if you could at least indicate whether you get
> > something like
> > 
> > LOG: info Dedup: starting ... blah blah blah
> > 
> > Taking this to a larger context I am not particularly happy with the
> > verboseness of logging when there are errors with indexing commands. When
> > we experience an error during any of the index related commands we get
> > back Job failed. It would be nice to get back a reason for the job
> > failing which was more clear than a stack trace.
> > 
> > Finally, this is from a personal point of view, I would highly recommend
> > that you upgrade to a newer (1.3) version of Nutch if you are using this
> > in production. There are significant improvements in functionality.
> > 
> > Lewis
> > 
> > On Mon, Aug 29, 2011 at 3:24 AM, zhao <[email protected]> wrote:
> > > Dear all,
> > > after use nutch 0.9 ,but have a question,Detailed description of the
> > > problem
> > > is
> > > 
> > >       Exception in thread "main" java.io.IOException: Job failed!
> > >       
> > >        at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:604)
> > >        at
> > > 
> > > org.apache.nutch.indexer.DeleteDuplicates.dedup(DeleteDuplicates.java:4
> > > 39 )
> > > 
> > >          at org.apache.nutch.crawl.Crawl.main(Crawl.java:135)
> > > 
> > > Thank you for your help
> > > 
> > >  zhao
> > > 
> > > --
> > > View this message in context:
> > > http://lucene.472066.n3.nabble.com/a-question-about-job-failed-tp329166
> > > 9p 3291669.html Sent from the Nutch - User mailing list archive at
> > > Nabble.com.

-- 
Markus Jelsma - CTO - Openindex
http://www.linkedin.com/in/markus17
050-8536620 / 06-50258350

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