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https://issues.apache.org/jira/browse/HDFS-4548?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daryn Sharp updated HDFS-4548:
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Attachment: HDFS-4548.patch
Basic approach is if an {{AuthenticationException}} is encountered while
holding a SPNEGO token, blank it out and try again. If the second attempt
fails, error out.
I need to figure out how to write tests for this change, but please provide
feedback on whether this is a viable approach.
> Webhdfs doesn't renegotiate SPNEGO token
> ----------------------------------------
>
> Key: HDFS-4548
> URL: https://issues.apache.org/jira/browse/HDFS-4548
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.0.0-alpha, 3.0.0, 0.23.7
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Priority: Critical
> Attachments: HDFS-4548.patch
>
>
> When the webhdfs SPNEGO token expires, the fs doesn't attempt to renegotiate
> a new SPNEGO token. This renders webhdfs unusable for daemons that are
> logged in via a keytab which would allow a new SPNEGO token to be generated.
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