hadoop启动错误总结

1.hadoop3: mkdir: cannot create directory `/usr/local/hadoop/bin/../logs': Permission denied

把所有Datanode节点执行下面命令

[hadoop@hadoop3 local]$ chown -R hadoop:hadoop hadoop-0.20.2/

2.

2012-08-05 10:52:11,807 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: org.apache.hadoop.hdfs.server.common.InconsistentFSStateException: Directory /home/hadoop/namenode is in an inconsistent state: storage directory does not exist or is not accessible.

hadoop配置好之后一定先要格式化，

[hadoop@hadoop1 local]$ hadoop namenode -format

3.

2012-08-05 11:20:40,127 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Call to hadoop1/192.168.127.118:9000 failed on local exception: java.net.NoRouteToHostException: No route to host

关闭防护墙

[hadoop@hadoop1 local]$ chkconfig --level 2345 iptables off

[hadoop@hadoop1 local]$ chkconfig --level 2345 ip6tables off

4

2012-08-05 14:53:50,041 FATAL org.apache.hadoop.mapred.JobTracker: java.lang.RuntimeException: Not a host:port pair: local

仔细检查你的mapred-site.xml文件

5

org.apache.hadoop.security.AccessControlException: Permission denied: user=xxj

在服务端的hdfs-site.xml文件中加入

<property>
  <name>dfs.permissions</name>
  <value>false</value>
 </property>