Hadoop的NameNode无法启动异常

ree12

2014-09-20 08:08:54,179 ERROR org.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesystem initialization failed.
java.io.IOException: NameNode is not formatted.
    at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:331)
    at org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:104)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:427)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:395)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:299)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:569)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1479)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1488)
2014-09-20 08:08:54,199 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: java.io.IOException: NameNode is not formatted.
    at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:331)
    at org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:104)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:427)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:395)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:299)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:569)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1479)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1488)


解决方法：
格式化NameNode

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

[iyunv@hadoop bin]# ./hadoop namenode -format 13/06/28 22:50:23 INFO namenode.NameNode: STARTUP_MSG: /************************************************************ STARTUP_MSG: Starting NameNode STARTUP_MSG:   host = java.net.UnknownHostException: hadoop: hadoop STARTUP_MSG:   args = [-format] STARTUP_MSG:   version = 0.20.2 STARTUP_MSG:   build = https://svn.apache.org/repos/asf ... ranches/branch-0.20 -r 911707; compiled by 'chrisdo' on Fri Feb 19 08:07:34 UTC 2010 ************************************************************/ 13/06/28 22:50:23 INFO namenode.FSNamesystem: fsOwner=root,root 13/06/28 22:50:23 INFO namenode.FSNamesystem: supergroup=supergroup 13/06/28 22:50:23 INFO namenode.FSNamesystem: isPermissionEnabled=true 13/06/28 22:50:38 INFO metrics.MetricsUtil: Unable to obtain hostName java.net.UnknownHostException: hadoop: hadoop     at java.net.InetAddress.getLocalHost(InetAddress.java:1354)     at org.apache.hadoop.metrics.MetricsUtil.getHostName(MetricsUtil.java:91)     at org.apache.hadoop.metrics.MetricsUtil.createRecord(MetricsUtil.java:80)     at org.apache.hadoop.hdfs.server.namenode.FSDirectory.initialize(FSDirectory.java:73)     at org.apache.hadoop.hdfs.server.namenode.FSDirectory.<init>(FSDirectory.java:68)     at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:379)     at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:854)     at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:948)     at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:965) 13/06/28 22:50:38 INFO common.Storage: Image file of size 94 saved in 0 seconds. 13/06/28 22:50:38 INFO common.Storage: Storage directory /tmp/hadoop-root/dfs/name has been successfully formatted. 13/06/28 22:50:38 INFO namenode.NameNode: SHUTDOWN_MSG: /************************************************************ SHUTDOWN_MSG: Shutting down NameNode at java.net.UnknownHostException: hadoop: hadoop ************************************************************/

问题：

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

2014-09-20 08:02:32,476 INFO org.apache.hadoop.hdfs.server.common.Storage: Storage directory /tmp/hadoop-root/dfs/name does not exist 2014-09-20 08:02:32,480 ERROR org.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesystem initialization failed. org.apache.hadoop.hdfs.server.common.InconsistentFSStateException: Directory /tmp/hadoop-root/dfs/name is in an inconsistent state: storage directory does not exist or is not accessible.     at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:304)     at org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:104)     at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:427)     at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:395)     at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:299)     at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:569)     at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1479)     at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1488) 2014-09-20 08:02:32,494 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: org.apache.hadoop.hdfs.server.common.InconsistentFSStateException: Directory /tmp/hadoop-root/dfs/name is in an inconsistent state: storage directory does not exist or is not accessible.     at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:304)     at org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:104)     at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:427)     at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:395)     at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:299)     at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:569)     at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1479)     at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1488) 2014-09-20 08:02:32,495 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: SHUTDOWN_MSG: /************************************************************ SHUTDOWN_MSG: Shutting down NameNode at localhost/127.0.0.1 ************************************************************/

解决：

1	mkidr -pv  /tmp/hadoop-root/dfs/name