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https://issues.apache.org/jira/browse/HDFS-4548?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13620085#comment-13620085
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Kihwal Lee commented on HDFS-4548:
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bq. The UGI should, in using keytab, set renewTGT=true. This will make the JDK
to renew automatically the ticket.
There are other places something similar is done: GetImageServlet and
SecondaryNameNode call reloginFromKeytab(), not even
checkTGTAndReloginFromKeytab(). If what you suggested works, we can fix them
too. We could perhaps do that in a separate jira.
> Webhdfs doesn't renegotiate SPNEGO token
> ----------------------------------------
>
> Key: HDFS-4548
> URL: https://issues.apache.org/jira/browse/HDFS-4548
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: 2.0.0-alpha, 3.0.0, 0.23.7
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Priority: Blocker
> Attachments: HDFS-4548.branch-23.patch, HDFS-4548.branch-23.patch,
> HDFS-4548.branch-23.patch, HDFS-4548.branch-23.patch,
> HDFS-4548.branch-23.patch, HDFS-4548.patch, HDFS-4548.patch, HDFS-4548.patch,
> HDFS-4548.patch, 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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