Github user jerryshao commented on the issue:
https://github.com/apache/spark/pull/19885
>User info isn't picked up from the URL, it's taken off your Kerberos
credentials. If you are running HDFS unkerberized, then UGI takes it from the
environment variable HADOOP_USER_NAME.
I understand that userInfo is not picked from URL. But here in this PR it
tries to use authority to compare to filesystems, and authority includes
userInfo. So based on the code here, `hdfs://[email protected]:8020` and
`hdfs://[email protected]:8020` are obviously two filesystems, but is that true
this two URIs belongs to two actual hdfs clusters? Or they're just two local
filesystem objects?
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