权限问题 需将系统名字更改为hadoop文件夹可以访问的用户名
System.setProperty("HADOOP_USER_NAME", "baiyun")
by: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.AccessControlException): Permission denied: user=SwordArtOnline, access=WRITE,
System.setProperty("HADOOP_USER_NAME", "baiyun")
by: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.AccessControlException): Permission denied: user=SwordArtOnline, access=WRITE,