1.你的没有datanode，重启一下集群看看
2.修改hdfs-site.xml的权限，修改为false.
具体参考Hadoop1.x安装配置文件及参数说明

      <property>
                   <name>dfs.permissions</name>
                   <value>false</value>
<description> If "true", enable permission checking in HDFS. If "false", permission checking is turned off,   but all other behavior is unchanged. Switching from one parameter value to   the other does   not change the mode, owner or group of files or directories
              </description>
        </property>
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