Steve Loughran created HADOOP-12752:
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Summary: Improve diagnostics/use of envvar/sysprop credential
propagation
Key: HADOOP-12752
URL: https://issues.apache.org/jira/browse/HADOOP-12752
Project: Hadoop Common
Issue Type: Sub-task
Components: security
Affects Versions: 2.7.2
Reporter: Steve Loughran
* document the system property {{hadoop.token.files}}.
* document the env var {{HADOOP_TOKEN_FILE_LOCATION}}.
* When UGI inits tokens off that or the env var , log this fact
* when trying to load a file referenced in the env var (a) trim it and (b)
check for it existing, failing with a message referring to the ENV var as well
as the file.
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