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https://issues.apache.org/jira/browse/HDFS-2904?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13210581#comment-13210581
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Todd Lipcon commented on HDFS-2904:
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bq. Currently, hftp and webhdfs actually set a different service in the token
(port is https port instead of rpc port). Tokens issued by hftp, and webhdfs
may not work with the logical namespaceid in the service, because logical
namespaceid would resolve to ipc port only?
I'm not sure I follow what you mean here... given that HFTP and webhdfs are
HTTP-based, they fall under the scope of HDFS-2292. We should address those
there along with the rest of HA for those services.
bq. The main problem is that the service is set at the client where
information about the standby may not be available.
Right.
Given that, does the current design seem like the best option? Since this
design choice doesn't get exposed to users anyway, I think it's reasonable to
commit as is, and if we figure out a better way later we can change it would
changing anything user-facing.
> HA: Client support for getting delegation tokens to an HA cluster
> -----------------------------------------------------------------
>
> Key: HDFS-2904
> URL: https://issues.apache.org/jira/browse/HDFS-2904
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha, hdfs client, name-node, security
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Critical
> Attachments: hdfs-2904.txt, hdfs-2904.txt, hdfs-2904.txt, test-dt.sh
>
>
> Currently we have server-side support for delegation tokens in HA, and some
> tests to verify it, but the client throws NPEs when trying to fetch a DT.
> This is because the cluster doesn't have a single hostname, but instead a
> logical nameservice name.
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