DataNode-- Initialization failed for block pool Block pool BP-1088120134-127.0.1.1-1441936318521

问题：

2015-09-1110:06:00,571 FATAL org.apache.hadoop.hdfs.server.datanode.DataNode:Initialization failed for block pool Block poolBP-1088120134-127.0.1.1-1441936318521 (storage idDS-763621962-127.0.1.1-50010-1441936111626)
service tolocalhost/127.0.0.1:9000
java.io.IOException:Incompatible clusterIDs in /home/hadoop/dfs/data: namenode clusterID= CID-2b886fd5-b66e-4b7e-bad8-e779d45f78bc; datanode clusterID =CID-32361fa4-6d28-42a1-aa25-1f3418d5dbb7
atorg.apache.hadoop.hdfs.server.datanode.DataStorage.doTransition(DataStorage.java:391)
atorg.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:191)
atorg.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:219)
atorg.apache.hadoop.hdfs.server.datanode.DataNode.initStorage(DataNode.java:837)
atorg.apache.hadoop.hdfs.server.datanode.DataNode.initBlockPool(DataNode.java:808)
atorg.apache.hadoop.hdfs.server.datanode.BPOfferService.verifyAndSetNamespaceInfo(BPOfferService.java:280)
atorg.apache.hadoop.hdfs.server.datanode.BPServiceActor.connectToNNAndHandshake(BPServiceActor.java:222)
atorg.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:664)
atjava.lang.Thread.run(Thread.java:745)
2015-09-1110:06:00,572 WARN org.apache.hadoop.hdfs.server.datanode.DataNode:Ending block pool service for: Block poolBP-1088120134-127.0.1.1-1441936318521 (storage idDS-763621962-127.0.1.1-50010-1441936111626)
service tolocalhost/127.0.0.1:9000
2015-09-1110:06:00,673 INFO org.apache.hadoop.hdfs.server.datanode.DataNode:Removed Block pool BP-1088120134-127.0.1.1-1441936318521 (storage idDS-763621962-127.0.1.1-50010-1441936111626)
2015-09-1110:06:02,673 WARN org.apache.hadoop.hdfs.server.datanode.DataNode:Exiting Datanode

解决方案：

hadoop@gyj-Inspiron-5420:~/dfs/data$rm -rf current