FAQ
Hi, guys:

During reduce phrase, hadoop always report a lot of the following error
information:

11/03/01 13:36:04 INFO mapreduce.Job: Task Id :
attempt_201102281006_0004_m_000002_1, Status : FAILED
Too many fetch-failures
11/03/01 13:36:04 WARN mapreduce.Job: Error reading task
outputhttp://localhost.localdomain:50060/tasklog?plaintext=true&attemptid=attempt_201102281006_0004_m_000002_1&filter=stdout
11/03/01 13:36:04 WARN mapreduce.Job: Error reading task
outputhttp://localhost.localdomain:50060/tasklog?plaintext=true&attemptid=attempt_201102281006_0004_m_000002_1&filter=stderr
11/03/01 13:36:09 INFO mapreduce.Job: map 93% reduce 16%
11/03/01 13:36:12 INFO mapreduce.Job: map 100% reduce 16%
11/03/01 13:36:26 INFO mapreduce.Job: Task Id :
attempt_201102281006_0004_m_000009_0, Status : FAILED
Too many fetch-failures
11/03/01 13:36:26 WARN mapreduce.Job: Error reading task
outputhttp://localhost.localdomain:50060/tasklog?plaintext=true&attemptid=attempt_201102281006_0004_m_000009_0&filter=stdout
11/03/01 13:36:26 WARN mapreduce.Job: Error reading task
outputhttp://localhost.localdomain:50060/tasklog?plaintext=true&attemptid=attempt_201102281006_0004_m_000009_0&filter=stderr

Though finally I could get the right results, I wonder what's the causes of
so many these error reports. Do you have similar experience? Or do you have
any suggestions about my problem?

Thanks!

--
Best Regards!

Sincerely
Bo Sang

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  • Jean-Daniel Cryans at Mar 1, 2011 at 6:47 pm
    Did you google the error before posting here? It's a very common
    question that was answered dozens of times.

    J-D
    On Tue, Mar 1, 2011 at 10:42 AM, Bo Sang wrote:
    Hi, guys:

    During reduce phrase, hadoop always report a lot of the following error
    information:

    11/03/01 13:36:04 INFO mapreduce.Job: Task Id :
    attempt_201102281006_0004_m_000002_1, Status : FAILED
    Too many fetch-failures
    11/03/01 13:36:04 WARN mapreduce.Job: Error reading task
    outputhttp://localhost.localdomain:50060/tasklog?plaintext=true&attemptid=attempt_201102281006_0004_m_000002_1&filter=stdout
    11/03/01 13:36:04 WARN mapreduce.Job: Error reading task
    outputhttp://localhost.localdomain:50060/tasklog?plaintext=true&attemptid=attempt_201102281006_0004_m_000002_1&filter=stderr
    11/03/01 13:36:09 INFO mapreduce.Job:  map 93% reduce 16%
    11/03/01 13:36:12 INFO mapreduce.Job:  map 100% reduce 16%
    11/03/01 13:36:26 INFO mapreduce.Job: Task Id :
    attempt_201102281006_0004_m_000009_0, Status : FAILED
    Too many fetch-failures
    11/03/01 13:36:26 WARN mapreduce.Job: Error reading task
    outputhttp://localhost.localdomain:50060/tasklog?plaintext=true&attemptid=attempt_201102281006_0004_m_000009_0&filter=stdout
    11/03/01 13:36:26 WARN mapreduce.Job: Error reading task
    outputhttp://localhost.localdomain:50060/tasklog?plaintext=true&attemptid=attempt_201102281006_0004_m_000009_0&filter=stderr

    Though finally I could get the right results, I wonder what's the causes of
    so many these error reports. Do you have similar experience? Or do you have
    any suggestions about my problem?

    Thanks!

    --
    Best Regards!

    Sincerely
    Bo Sang

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postedMar 1, '11 at 6:43p
activeMar 1, '11 at 6:47p
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Bo Sang: 1 post Jean-Daniel Cryans: 1 post

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