hadoop@ubuntu :~$ hadoop namenode -format
^[[3~12/10/24 16:51:41 INFO namenode.NameNode: STARTUP_MSG:
12/10/24 16:51:41 INFO util.GSet: VM type = 32-bit
12/10/24 16:51:41 INFO util.GSet: 2% max memory = 19.33375 MB
12/10/24 16:51:41 INFO util.GSet: capacity = 2^22 = 4194304 entries
12/10/24 16:51:41 INFO util.GSet: recommended=4194304, actual=4194304
12/10/24 16:51:41 INFO namenode.FSNamesystem: fsOwner=hadoop
12/10/24 16:51:41 INFO namenode.FSNamesystem: supergroup=supergroup
12/10/24 16:51:41 INFO namenode.FSNamesystem: isPermissionEnabled=true
12/10/24 16:51:41 INFO namenode.FSNamesystem: dfs.block.invalidate.limit=100
12/10/24 16:51:41 INFO namenode.FSNamesystem: isAccessTokenEnabled=false accessKeyUpdateInterval=0 min(s), accessTokenLifetime=0 min(s)
12/10/24 16:51:41 INFO namenode.NameNode: Caching file names occuring more than 10 times
12/10/24 16:51:41 ERROR namenode.NameNode: java.io.IOException: Cannot create directory /export/home/dfs/name/current
at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.clearDirectory(Storage.java:294)
at org.apache.hadoop.hdfs.server.namenode.FSImage.format(FSImage.java:1324)
at org.apache.hadoop.hdfs.server.namenode.FSImage.format(FSImage.java:1343)
at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:1200)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1391)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1412)
12/10/24 16:51:41 INFO namenode.NameNode: SHUTDOWN_MSG:
百度上搜的方法如下:可没解决。。。。
解法一:帮 /home/hadoop 加入其他使用者也可以写入的权限
sudo chmod -R a+w /home/hadoop/tmp
解法二:改用 user 身份可以写入的路径 hadoop.tmp.dir 的路径 - 修改 core-site.xml
<property>
<name>hadoop.tmp.dir</name>
<value>/tmp/hadoop-${user.name}</value>
</property>