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From Roger Maillist <darkchanterl...@gmail.com>
Subject Hadoop on Stand-alone PC
Date Thu, 02 Oct 2014 18:58:35 GMT
Hi
For learning purposes, I am trying to set up my own hadoop/hdfs system at
home. I am running openSuse 13 and Hadoop 2.5.1.

I followed the explanations in the "Singe Node Setup":
http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/SingleCluster.html

My problem is, the data node won't start:

--> "Incompatible clusterIDs"

How can I fix this?

Thanks
Roger

2014-10-02 20:48:31,022 FATAL
org.apache.hadoop.hdfs.server.datanode.DataNode: Initialization failed for
Block pool <registering> (Datanode Uuid unassigned) service to localhost/
127.0.0.1:9000. Exiting.
java.io.IOException: Incompatible clusterIDs in /tmp/hadoop-roger/dfs/data:
namenode clusterID = CID-4146405c-72b8-404c-944d-58d5453ae939; datanode
clusterID = CID-9280fd26-bee4-430c-8ea5-732a570047db
at
org.apache.hadoop.hdfs.server.datanode.DataStorage.doTransition(DataStorage.java:477)
at
org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:226)
at
org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:254)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.initStorage(DataNode.java:975)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.initBlockPool(DataNode.java:946)
at
org.apache.hadoop.hdfs.server.datanode.BPOfferService.verifyAndSetNamespaceInfo(BPOfferService.java:278)
at
org.apache.hadoop.hdfs.server.datanode.BPServiceActor.connectToNNAndHandshake(BPServiceActor.java:220)
at
org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:812)
at java.lang.Thread.run(Thread.java:745)

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