解决Hadoop DataNode ‘Incompatible clusterIDs‘报错

本文介绍: 启动 hadoop时报错。Fai led to ad d storage dire ctory

启动 hadoop时报错Failed to add storage directory

2023-11-26 12:02:06,840 WARN common.Storage: Failed to add storage directory [DISK]file:xxx
java.io.IOException: Incompatible clusterIDs in xxx/dfs/data: namenode clusterID = CID-xxxxxx; datanode clusterID = CID-xxxxxxx
         at org.apache.hadoop.hdfs.server.datanode.DataStorage.doTransition(DataStorage.java:722)
         at org.apache.hadoop.hdfs.server.datanode.DataStorage.loadStorageDirectory(DataStorage.java:286)
         at org.apache.hadoop.hdfs.server.datanode.DataStorage.loadDataStorage(DataStorage.java:399)
         at org.apache.hadoop.hdfs.server.datanode.DataStorage.addStorageLocations(DataStorage.java:379)
         at org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:544)
         at org.apache.hadoop.hdfs.server.datanode.DataNode.initStorage(DataNode.java:1690)
         at org.apache.hadoop.hdfs.server.datanode.DataNode.initBlockPool(DataNode.java:1650)
         at org.apache.hadoop.hdfs.server.datanode.BPOfferService.verifyAndSetNamespaceInfo(BPOfferService.java:376)
         at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.connectToNNAndHandshake(BPServiceActor.java:280)
         at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:816)
         at java.lang.Thread.run(Thread.java:748)
2023-11-26 12:02:06,851 ERROR datanode.DataNode: Initialization failed for Block pool <registering> (Datanode Uuid xxxxxxx-xxxxx-x-xxxxxxx) service to /0.0.0.0:19000. Exiting.
java.io.IOException: All specified directories have failed to load.