datanode无法启动问题

今天在抽一个大表数据时,表得大小有1T+,需要跑spark任务对该表进行统计去重操作,由于表较大，而且spark临时文件也比较大，就修改了日志级别,对相关影响进行了重启,重启后发现datanode无法重启，一直报错,具体报错信息如下:

023-09-14 11:08:54,631 INFO  util.ExitUtil (ExitUtil.java:terminate(210)) - Exiting with status 1: java.io.IOException: The path component: '/' in '/var/lib/hadoop-hdfs/dn_socket' has permissions 0777 uid 0 and gid 0. It is not protected because it is world-writable. This might help: 'chmod o-w /'. For more information: https://wiki.apache.org/hadoop/SocketPathSecurity

chmod o-w /

[root@starce hdfs]# pwd
/var/1og/hadoop/hdfs
[root@starca hdfs]chmod o-w /
[root@starce hdfs]#
[root@starca hdfs]# cd /