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action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home4/joyplace/public_html/wp-includes/functions.php on line 6114You are getting the below error during DataNode startup. This post talks about how to fix the issue.<\/p>\n
2013-04-11 16:25:50,515 INFO org.apache.hadoop.ipc.Server: IPC Server Responder: starting\n2013-04-11 16:25:50,631 INFO org.apache.hadoop.ipc.Server: IPC Server listener on 50020: starting\n2013-04-11 16:26:15,068 INFO org.apache.hadoop.hdfs.server.common.Storage: Lock on \/home\/hadoop\/workspace\/hadoop_space\/hadoop23\/dfs\/data\/in_use.lock acquired by nodename 3099@user-VirtualBox\n2013-04-11 16:26:15,720 FATAL org.apache.hadoop.hdfs.server.datanode.DataNode: Initialization failed for block pool Block pool BP-474150866-127.0.1.1-1365686732002 (storage id DS-317990214-127.0.1.1-50010-1365505141363) service to localhost\/127.0.0.1:8020\njava.io.IOException: Incompatible clusterIDs in \/home\/hadoop\/workspace\/hadoop_space\/hadoop23\/dfs\/data: namenode clusterID = CID-1745a89c-fb08-40f0-a14d-d37d01f199c3; datanode clusterID = CID-bb3547b0-03e4-4588-ac25-f0299ff81e4f\nat org.apache.hadoop.hdfs.server.datanode.DataStorage .doTransition(DataStorage.java:391)\nat org.apache.hadoop.hdfs.server.datanode.DataStorage .recoverTransitionRead(DataStorage.java:191)\nat org.apache.hadoop.hdfs.server.datanode.DataStorage .recoverTransitionRead(DataStorage.java:219)\nat org.apache.hadoop.hdfs.server.datanode.DataNode.in itStorage(DataNode.java:850)\nat org.apache.hadoop.hdfs.server.datanode.DataNode.in itBlockPool(DataNode.java:821)\nat org.apache.hadoop.hdfs.server.datanode.BPOfferServ ice.verifyAndSetNamespaceInfo(BPOfferService.java: 280)\nat org.apache.hadoop.hdfs.server.datanode.BPServiceAc tor.connectToNNAndHandshake(BPServiceActor.java:22 2)\nat org.apache.hadoop.hdfs.server.datanode.BPServiceAc tor.run(BPServiceActor.java:664)\nat java.lang.Thread.run(Thread.java:722)\n2013-04-11 16:26:16,212 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Ending block pool service for: Block pool BP-474150866-127.0.1.1-1365686732002 (storage id DS-317990214-127.0.1.1-50010-1365505141363) service to localhost\/127.0.0.1:8020\n2013-04-11 16:26:16,276 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Removed Block pool BP-474150866-127.0.1.1-1365686732002 (storage id DS-317990214-127.0.1.1-50010-1365505141363)\n2013-04-11 16:26:18,396 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Exiting Datanode\n2013-04-11 16:26:18,940 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 0\n2013-04-11 16:26:19,668 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG:\n\/************************************************** **********\nSHUTDOWN_MSG: Shutting down DataNode at user-VirtualBox\/127.0.1.1\n************************************************** **********\/<\/pre>\nCause<\/span><\/h2>\n
When you initialize the NameNode either during a new installation or by formatting the NameNode for any reason, a new clusterID is created. You will see this exception If the datanodes are referring to a different clusterID that doesn\u2019t match with the NameNode.<\/span><\/p>\n
Solution<\/span><\/h2>\n
When the NameNode is formatted the DataNodes should also be formatted.<\/span><\/p>\n
Find the location of the data directory in the DataNode where the HDFS blocks are stored. You can find the current location of the data directory dfs.datanode.data.dir of the cluster in hdfs-site.xml file under the property dfs.datanode.data.dir<\/span><\/p>\n
<property> \n<name>dfs.datanode.data.dir<\/name> \n<value>file:\/data\/dfs\/datanode\/data<\/value> \n<\/property><\/pre>\nOnce you have located the directory location, login in to all datanodes and remove the files and folders under the directory.<\/span><\/p>\n
Start all the datanodes cnce the files and directories are cleaned up under the <\/span>dfs.datanode.data.dir.<\/span><\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
You are getting the below error during DataNode startup. This post talks about how to fix the issue. 2013-04-11 16:25:50,515 INFO org.apache.hadoop.ipc.Server: IPC Server Responder: starting [\u2026]<\/span><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28],"tags":[],"class_list":["post-1908","post","type-post","status-publish","format-standard","hentry","category-hdfs"],"yoast_head":"\n
How to fix Incompatible clusterIDs error during DataNode startup? - Big Data In Real World<\/title>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\t\n\t\n\t\n