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From "Chandra Mohan, Ananda Vel Murugan" <Ananda.Muru...@honeywell.com>
Subject RE: Hadoop Pi map-reduce job hangs
Date Wed, 08 Aug 2012 05:32:26 GMT
Hi Devaraj,

Thanks for the response.

Do you mean the logs available in "/var/hadoop/tmp/mapred/local/userlogs/job_201208081600_0001/attempt_201208081600_0001_m_000005_0"
folder?. I don't see any log in stderr file.  Also syslog file has no exception or error.

Am I looking at correct file?


From: Devaraj k [mailto:devaraj.k@huawei.com]
Sent: Wednesday, August 08, 2012 10:45 AM
To: user@hadoop.apache.org
Subject: RE: Hadoop Pi map-reduce job hangs

Hi Anand,

   Can you check the task attempt logs for job, what is happening in the reduce task.



From: Chandra Mohan, Ananda Vel Murugan [Ananda.Murugan@honeywell.com]
Sent: Wednesday, August 08, 2012 7:15 AM
To: user@hadoop.apache.org
Subject: Hadoop Pi map-reduce job hangs

I have set up a three node cluster following the instructions here


I ran into java.io.IOException: Incompatible namespaceIDs error and I fixed by manually updating
the namespace ID. I restarted the cluster and tried running sample Pi calculation job. It
hangs as shown below


It is running for more than 30 minutes. I quickly checked the logs and did not find any exception.
How do I fix this? Any help would be greatly appreciated.


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