Github user jerryshao commented on the issue: https://github.com/apache/spark/pull/17335 I'm not sure if I understand your scenario correctly. In your case Spark application is embeded into your own application, your application is still worked after Spark is stopped. And because delegation tokens is expired explicitly after yarn app is finished. Then your following hdfs operations which honor delegation tokens will be failed, so you have to use tgt rather than delegation tokens. Am I right? I guess it related to this JIRA (https://issues.apache.org/jira/browse/YARN-2964). It may already be fixed in yarn side. But with your fix, proxy user is not worked. And I think to handle your scenario, we could deliberately remove all the tokens in current UGI after application is finished. So that your following hdfs operations could honor tgt to get new tokens.
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