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https://issues.apache.org/jira/browse/HDFS-7984?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14982990#comment-14982990
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Allen Wittenauer commented on HDFS-7984:
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* The new property needs documentation in core-default.xml.
There *really* should be some example usage, etc, but given that there is zero
end-user documentation on delegation tokens that I can find, there's really not
a great place to put it. Let's open another JIRA for that though since that's
a much larger scope.
I'm also kinda surprised that there really isn't a decent, appropriate location
to define the constant string for the config property. A quick pass through
hadoop-common shows that these things are all over the place. :(
> webhdfs:// needs to support provided delegation tokens
> ------------------------------------------------------
>
> Key: HDFS-7984
> URL: https://issues.apache.org/jira/browse/HDFS-7984
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: webhdfs
> Affects Versions: 3.0.0
> Reporter: Allen Wittenauer
> Assignee: HeeSoo Kim
> Priority: Blocker
> Attachments: HDFS-7984.001.patch, HDFS-7984.002.patch,
> HDFS-7984.003.patch, HDFS-7984.004.patch, HDFS-7984.patch
>
>
> When using the webhdfs:// filesystem (especially from distcp), we need the
> ability to inject a delegation token rather than webhdfs initialize its own.
> This would allow for cross-authentication-zone file system accesses.
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