I set up a Hadoop test environment on three virtual CentOS 6.2. All things go smoothly but start-mapred .
what I always get is: 2012-02-03 19:54:17,592 WARN org.apache.hadoop.mapred.JobTracker: Failed to initialize recovery manager. org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /home/hadoop/devx/var/tmp/mapred/system/jobtracker.info could o nly be replicated to 0 nodes, instead of 1
and I have checked nameSpaceID on name node and data node, they are identical.
is there anything I am doing wrong?
