hadoop datanode几秒钟后死亡

Question

我在vmware上安装了hadoop-2.2.0版本，当它启动时，它显示所有进程正常工作，但一段时间后datanode被终止。所以，我查了日志，我发现这一点：

2014-01-21 04:36:00,325 WARN org.apache.hadoop.util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable 
2014-01-21 04:36:21,034 FATAL org.apache.hadoop.hdfs.server.datanode.DataNode: Exception in secureMain 
java.net.UnknownHostException: ubuntu: ubuntu 
at java.net.InetAddress.getLocalHost(InetAddress.java:1402) 
at org.apache.hadoop.security.SecurityUtil.getLocalHostName(SecurityUtil.java:227) 
at org.apache.hadoop.security.SecurityUtil.login(SecurityUtil.java:247) 
at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1640) 
at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1665) 
at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:1837) 
at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1858) 
2014-01-21 04:36:21,107 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1 
2014-01-21 04:36:21,114 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG: 
/************************************************************ 
SHUTDOWN_MSG: Shutting down DataNode at java.net.UnknownHostException: ubuntu: ubuntu 
************************************************************/ 

Answer 1

我认为这个问题是在你的/etc/hosts文件。 确保它配置正确。我/etc/hosts文件看起来像这样：

127.0.0.1  localhost 
192.168.0.1  master mypcname 
192.168.0.18 slave1 
192.168.0.12 slave2 
192.168.0.17 slave3 

硕士和

127.0.0.1  localhost 
192.168.0.1  master 
192.168.0.18 slave1 slave1pcname 
192.168.0.12 slave2 
192.168.0.17 slave3 

的SLAVE1。