E-MapReduce 在开启Kerberos认证之后，从阿里云控制台向yarn提交的任务鉴权失败
控制台返回的错误信息
ERROR HasClient: Failed to get client token plugin from config: Unregistered plugin EMR
Client: Exception encountered while connecting to the server : javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)]
查看has的认证日志发现错误信息
INFO{KdcHandler.java:177}-KRB error occurred while processing request: Additional pre-authentication required INFO{AsRequest.java:112}-AS_REQ ISSUE: authtime 1566224343616,*********@*********.COM for *********.COM@****.COM INFO{TgsRequest.java:117}-TGS_REQ ISSUE: authtime 1566224344775,********@************.COM for *********.COM@******.COM ERROR{AliyunEMRServerPlugin.java:72}-No CKI found ERROR{HasApi.java:299}-Failed to verify auth token: No CKI found ERROR{AliyunEMRServerPlugin.java:72}-No CKI found ERROR{HasApi.java:299}-Failed to verify auth token: No CKI found ERROR{AliyunEMRServerPlugin.java:72}-No CKI found ERROR{HasApi.java:299}-Failed to verify auth token: No CKI found ERROR{AliyunEMRServerPlugin.java:72}-No CKI found ERROR{HasApi.java:299}-Failed to verify auth token: No CKI found ERROR{AliyunEMRServerPlugin.java:72}-No CKI found ERROR{HasApi.java:299}-Failed to verify auth token: No CKI found ERROR{AliyunEMRServerPlugin.java:72}-No CKI found ERROR{HasApi.java:299}-Failed to verify auth token: No CKI found ERROR{AliyunEMRServerPlugin.java:72}-No CKI found ERROR{HasApi.java:299}-Failed to verify auth token: No CKI found
哪位大佬遇到过这个问题，还望讲解一下，这个问题怎么解决，这个CKI是什么？
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