- cmd命令启动过程报错
- cmd启动提示io错误
Failed to setup local dir /tmp/hadoop-GK/nm-local-dir, which was marked as good. org.apache.hadoop.yarn.exceptions.YarnRuntimeException: Permissions incorrectly set for dir /tmp/hadoop-GK/nm-local-dir/nmPrivate, should be rwx------, actual value = rwxrwx-
解决方法：用管理员的身份运行cmd
java.io.IOException: Incompatible clusterIDs in D:hadoop3.0.3datadfsdatanode: namenode clusterID = CID-45d4d17f-96fd-4644-b0ee-7835ef5bc790; datanode clusterID = CID-01f27c2a-6229-4a10-b098-89e89d4c62e4
解决方法：删除hadoop中的data目录重启
