Sergey Shelukhin created HDFS-10757:
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Summary: KMSClientProvider combined with KeyProviderCache results
in wrong UGI being used
Key: HDFS-10757
URL: https://issues.apache.org/jira/browse/HDFS-10757
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Sergey Shelukhin
Priority: Critical
ClientContext::get gets the context from cache via a config setting based name,
then KeyProviderCache stored in ClientContext gets the key provider cached by
URI stored in configuration, too.
KMSClientProvider caches the UGI (actualUgi) in ctor; that means in particular
that all the users of DFS with KMSClientProvider in a process will get the KMS
token (along with other credentials) of the first user...
Either KMSClientProvider shouldn't store the UGI, or one of the caches should
be UGI-aware, like the FS object cache.
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