Exception in thread “main“ org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.namen

报错的详细信息

Exception in thread "main" org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.namenode.SafeModeException): Cannot create directory /user/root/.sparkStaging/application_1679932486841_0001. Name node is in safe mode.

原因：是因为Hadoop处于安全状态

解决方法：将安全模式关闭
命令如下：

hdfs dfsadmin -safemode leave