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hdfs datanode 启动失败

时间:2015-03-14 06:11:25      阅读:7165      评论:0      收藏:0      [点我收藏+]

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hadoop-root-datanode-ubuntu.log中:
2015-03-12 23:52:33,671 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 /hdfs/name/dfs/data: namenode clusterID = CID-70d64aad-1dfe-4f87-af15-d53ff80db3dd; datanode clusterID = CID-388a9ec6-cb87-4b0d-97c4-3b4d5c787b76
        at org.apache.hadoop.hdfs.server.datanode.DataStorage.doTransition(DataStorage.java:646)
        at org.apache.hadoop.hdfs.server.datanode.DataStorage.addStorageLocations(DataStorage.java:320)
        at org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:403)
        at org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:422)
        at org.apache.hadoop.hdfs.server.datanode.DataNode.initStorage(DataNode.java:1311)
        at org.apache.hadoop.hdfs.server.datanode.DataNode.initBlockPool(DataNode.java:1276)
        at org.apache.hadoop.hdfs.server.datanode.BPOfferService.verifyAndSetNamespaceInfo(BPOfferService.java:314)
        at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.connectToNNAndHandshake(BPServiceActor.java:220)
        at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:828)
        at java.lang.Thread.run(Thread.java:745)
2015-03-12 23:52:33,680 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Ending block pool service for: Block pool <registering> (Datanode Uuid unassigned) service to localhost/127.0.0.1:9000
2015-03-12 23:52:33,788 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Removed Block pool <registering> (Datanode Uuid unassigned)
2015-03-12 23:52:35,790 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Exiting Datanode
2015-03-12 23:52:35,791 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 0
2015-03-12 23:52:35,792 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down DataNode at ubuntu/127.0.1.1
************************************************************/
 
原因是:
namenode与datanode的clusterID在重新格式化namenode以后已经不再匹配,datanode无法启动。
另外:
此错误会导致在hive导入数据时发生如下错误(由于metadata不存在hdfs中,故create table并无报错):
hive> load data local inpath ‘/root/dbfile‘ overwrite into table employees PARTITION (country=‘US‘, state=‘IL‘);
Loading data to table default.employees partition (country=US, state=IL)
Failed with exception Unable to move source file:/root/dbfile to destination hdfs://localhost:9000/user/hive/warehouse/employees/country=US/state=IL/dbfile
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.MoveTas
 
解决方法:
将hdfs存储数据的所在目录删掉,重新格式化hdfs(相关参数:dfs.name.dir  dfs.data.dir):
hadoop namenode -format
 

hdfs datanode 启动失败

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原文地址:http://www.cnblogs.com/JingJ/p/4336926.html

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