Steve Loughran created HADOOP-17894:
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Summary: CredentialProviderFactory.getProviders() to detect
recursion
Key: HADOOP-17894
URL: https://issues.apache.org/jira/browse/HADOOP-17894
Project: Hadoop Common
Issue Type: Sub-task
Components: conf, fs/s3
Affects Versions: 3.3.1
Reporter: Steve Loughran
{{CredentialProviderFactory.getProviders()}} will be called recursively if the
FS being instantiated as a source of a JCECKs file calls
{{Configuration.getPassword()}}.
S3A FileSystem does this when looking at encryption settings, even when
authentication
is not being done by hadoop config options.
Recursion is straightforward to detect, leaving a choice of actions
# Fail
# Fix by having getPassword() return null; this implicitly skips use of the
credential providers for the nested FS instance.
# fix by skipping the specific credential provider factory with the problem
(warn first?)
My preference is for #3.
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