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https://issues.apache.org/jira/browse/HADOOP-12752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15138802#comment-15138802
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Steve Loughran commented on HADOOP-12752:
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thx for the review and commit. together we can fix kerberos. Or at least make
it possible to work out why it isn't working.
> 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
> Assignee: Steve Loughran
> Priority: Minor
> Fix For: 2.8.0
>
> Attachments: HADOOP-12752-001.patch, HADOOP-12752-002.patch
>
>
> * 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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