Hi Nagarjuna, Is it a test cluster? Do you have another cluster running close-by? Also, is it your first try?
It seems there is some previous data in the dfs directory which is not in sync with the last installation. Maybe you can remove the content of /Users/nagarjunak/Documents/hadoop-install/hadoop-2.0.3-alpha/tmp_20 if it's not usefull for you, reformat your node and restart it? JM 2013/2/20, nagarjuna kanamarlapudi <nagarjuna.kanamarlap...@gmail.com>: > Hi, > > I am trying to setup single node cluster of hadop 2.0.* > > When trying to start datanode I got the following error. Could anyone help > me out > > Block pool BP-1894309265-124.123.215.187-1361374377471 (storage id > DS-1175433225-124.123.215.187-50010-1361374235895) service to nagarjuna/ > 124.123.215.187:9000 > java.io.IOException: Incompatible clusterIDs in > /Users/nagarjunak/Documents/hadoop-install/hadoop-2.0.3-alpha/tmp_20/dfs/data: > namenode clusterID = CID-800b7eb1-7a83-4649-86b7-617913e82ad8; datanode > clusterID = CID-1740b490-8413-451c-926f-2f0676b217ec > at > org.apache.hadoop.hdfs.server.datanode.DataStorage.doTransition(DataStorage.java:391) > at > org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:191) > at > org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:219) > at > org.apache.hadoop.hdfs.server.datanode.DataNode.initStorage(DataNode.java:850) > at > org.apache.hadoop.hdfs.server.datanode.DataNode.initBlockPool(DataNode.java:821) > at > org.apache.hadoop.hdfs.server.datanode.BPOfferService.verifyAndSetNamespaceInfo(BPOfferService.java:280) > at > org.apache.hadoop.hdfs.server.datanode.BPServiceActor.connectToNNAndHandshake(BPServiceActor.java:222) > at > org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:664) > at java.lang.Thread.run(Thread.java:680) > 2013-02-20 21:03:39,856 WARN > org.apache.hadoop.hdfs.server.datanode.DataNode: Ending block pool service > for: Block pool BP-1894309265-124.123.215.187-1361374377471 (storage id > DS-1175433225-124.123.215.187-50010-1361374235895) service to nagarjuna/ > 124.123.215.187:9000 > 2013-02-20 21:03:39,958 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: Removed Block pool > BP-1894309265-124.123.215.187-1361374377471 (storage id > DS-1175433225-124.123.215.187-50010-1361374235895) > 2013-02-20 21:03:41,959 WARN > org.apache.hadoop.hdfs.server.datanode.DataNode: Exiting Datanode > 2013-02-20 21:03:41,961 INFO org.apache.hadoop.util.ExitUtil: Exiting with > status 0 > 2013-02-20 21:03:41,963 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG: > /************************************************************ > SHUTDOWN_MSG: Shutting down DataNode at nagarjuna/124.123.215.187 > ************************************************************/ >
