Github user jerryshao commented on the issue:
https://github.com/apache/spark/pull/21138
@mridulm I would treat the current fix as a workaround for SASL issue,
since it is a regression in 2.3.
For UGI refreshing issue (mainly cause STS long running failure, also lead
to SASL failure here), I think we can create a separate JIRA to fix the issue.
Since this is not a regression.
What do you think?
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