在运行 hadoop 多节点集群时，我在主日志上收到以下错误消息，有人可以建议该怎么做..？我需要创建一个新用户还是我可以在这里给我现有的机器用户名
2013-07-25 19:41:11,765 警告 org.apache.hadoop.security.UserGroupInformation：没有可供用户网络用户使用的组 2013-07-25 19:41:11,778 警告 org.apache.hadoop.security.ShellBasedUnixGroupsMapping：出现异常试图获取用户 webuser org.apache.hadoop.util.Shell$ExitCodeException: id: webuser: No such user 的组
hdfs-site.xml 文件
<configuration>
<property>
<name>dfs.replication</name>
<value>2</value>
<description>Default block replication.
The actual number of replications can be specified when the file is created.
The default is used if replication is not specified in create time.
</description>
</property>
</configuration>
核心站点.xml
<configuration>
<property>
<name>fs.default.name</name>
<value>hdfs://master:54310</value>
<description>The name of the default file system. A URI whose
scheme and authority determine the FileSystem implementation. The
uri's scheme determines the config property (fs.SCHEME.impl) naming
the FileSystem implementation class. The uri's authority is used to
determine the host, port, etc. for a filesystem.</description>
</property>
</configuration>
mapred-site.xml
<configuration>
<property>
<name>mapred.job.tracker</name>
<value>master:54311</value>
<description>The host and port that the MapReduce job tracker runs
at. If "local", then jobs are run in-process as a single map
and reduce task.
</description>
</property>
</configuration>
我跟着http://www.michael-noll.com/tutorials/running-hadoop-on-ubuntu-linux-multi-node-cluster/。
Hadoop 1.2.0 码头-6.1.26
添加我的 hdfs-site.xml 后看起来
<configuration>
<property>
<name>dfs.replication</name>
<value>2</value>
<description>Default block replication.
The actual number of replications can be specified when the file is created.
The default is used if replication is not specified in create time.
</description>
</property>
<property>
<name>dfs.web.ugi</name>
<value>hduser,hadoop</value>
</property>
</configuration>