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From Owen O'Malley <o...@yahoo-inc.com>
Subject Re: Task Tracker Status
Date Wed, 04 Oct 2006 06:01:44 GMT

On Oct 3, 2006, at 3:07 PM, Andrew McNabb wrote:

> On Mon, Oct 02, 2006 at 05:00:47PM -0600, Andrew McNabb wrote:
>>
>> Okay.  It actually looks like the job outright failed.  I'll look at
>> this a little more.
>>
>
> I've looked into this a little bit more.  There are some errors that
> appear in the job status page under failures.  For these jobs, it's  
> easy
> to see the exception that caused the problem.  However, there are  
> other
> jobs that fail, leaving Error blank.  When I go to the tasktracker log
> file, I can see the exception:
>
> INFO org.apache.hadoop.mapred.TaskRunner: task_0002_m_000000_0
> java.nio.charset.MalformedInputException: Input length = 14
> at org.apache.hadoop.io.Text.validateUTF8(Text.java:477)
>
> It's funny that some failures show the full error on the jobfailures
> page, while others leave a blank field.
>
> Anyway, I thought I should bring this to your attention.

This is likely fixed by the patch for HADOOP-293, if you aren't  
running the current subversion head. If you find other cases where  
the log has an exception and the web ui doesn't, please file a bug on  
it and include the call stack from the log.

Thanks,
    Owen

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