Server asks us to fall back to SIMPLE auth, but this client is configured to only allow secure connections.

我是在flume向hdfs 寫(sink)資料時遇到的這個錯誤.

Server (是指hdfs) asks us to fall back to SIMPLE auth, but this client (是指flume) is configured to only allow secure (是指kerberos) connections.

原因是flume開了kerberos,而hdfs沒有開kerberos.

此時flume和hdfs的通信就不能使用相同的認證方式,hdfs隻識别簡單認證模式,而flume是kerberos認證模式.