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In Compatible clusterIDs
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
************************************************************/
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB