Dear Sirs/madams i am trying to run hadoop 1.0.4 in the pseudo distributed mode, but i am facing with
datanode log, 01/05/2013 13:16:54 2013-05-01 13:16:54,206 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Incompatible namespaceIDs in /home/mohs/hadoop/dfsdirdata: namenode namespaceID = 717658700; datanode namespaceID = 1318489331 job-tracker log: 01/05/2013 13:24:40 org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /home/mohs/hadoop/tmp/mapred/system/ jobtracker.info could only be replicated to 0 nodes, instead of 1 data-node log: 01/05/2013 13:26:10 2013-05-01 13:26:09,711 WARN org.apache.hadoop.hdfs.DFSClient: DataStreamer Exception: org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /home/mohs/hadoop/tmp/mapred/system/jobtracker.info could only be replicated to 0 nodes, instead of 1 i have tried to solve this by removing the files in /tmp/hadoop/* and running hadoop namenode -format but i am facing with the same error. do you have any solution for this? regards Mohsen
