Github user saturday-shi commented on the issue:
https://github.com/apache/spark/pull/18230
@jerryshao I've taken a look at `spark.yarn.credentials.renewalTime` and
`spark.yarn.credentials.updateTime`, but I don't think there is a necessity for
excluding them. Changing on these properties means that either delegation
token's configuration or Spark itself has been changed. In both case,
restarting from checkpoint will not work.
Could you describe some elaborate scenes about the changing of
`spark.yarn.credentials.renewalTime` and `spark.yarn.credentials.updateTime`?
Or just mean to make it more robust?
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