Can you check the task attempt logs for job, what is happening in the reduce task.
From: Chandra Mohan, Ananda Vel Murugan [[EMAIL PROTECTED]]
Sent: Wednesday, August 08, 2012 7:15 AM
To: [EMAIL PROTECTED]
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.