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From "Khanh Nguyen" <kngu...@cs.umb.edu>
Subject Re: hadoop question
Date Thu, 07 Aug 2008 16:35:46 GMT
Can you also post you hadoop-site.xml and hadoop-default.xml?

-k

On Thu, Aug 7, 2008 at 3:52 AM, Mr.Thien <thien.td@anlab.vn> wrote:
> Hi everyone,
>
> I am trying to use hadoop.
>
> I set up my computer (thientd-desktop) as master (jobtracker and
> namenode). Two other computers: trunght-desktop and quanglt-desktop as
> slave.
>
> When I execute an example as below, the map operation seems to be ok.
> (It always success and fast).
> However the reduce operation always fails at 16.66%.
> If I run hadoop on only one computer, it runs ok.
>
> Below are the screen when the problem arise.
>
> /////
> thientd@thientd-desktop:~/projects/hadoop-0.17.1$ bin/hadoop jar
> hadoop-0.17.1-examples.jar wordcount gutenberg thien-out
> 08/08/07 14:17:15 INFO mapred.FileInputFormat: Total input paths to
> process : 1
> 08/08/07 14:17:15 INFO mapred.JobClient: Running job:
> job_200808071415_0001
> 08/08/07 14:17:16 INFO mapred.JobClient:  map 0% reduce 0%
> 08/08/07 14:17:23 INFO mapred.JobClient:  map 50% reduce 0%
> 08/08/07 14:17:24 INFO mapred.JobClient:  map 100% reduce 0%
> 08/08/07 14:17:28 INFO mapred.JobClient:  map 100% reduce 16%
> 08/08/07 14:25:34 INFO mapred.JobClient: Task Id :
> task_200808071415_0001_m_000001_0, Status : FAILED
> Too many fetch-failures
> 08/08/07 14:25:34 WARN mapred.JobClient: Error reading task
> outputquanglt-desktop
> 08/08/07 14:25:34 WARN mapred.JobClient: Error reading task
> outputquanglt-desktop
> //////
>
> Could anyone told me the possible reason of the error?
> Thanks in advanced.
>
> thientd.
>
>

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