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https://issues.apache.org/jira/browse/HADOOP-13206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15302734#comment-15302734
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Yongjun Zhang commented on HADOOP-13206:
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Hi [~zhz],
Thanks for reporting the issue and the patch. One minor comment, seems it's
better if we do the service match checking after we find {{if
(kindName.equals(token.getKind())}} is true.
> Delegation token cannot be fetched and used by different versions of client
> ---------------------------------------------------------------------------
>
> Key: HADOOP-13206
> URL: https://issues.apache.org/jira/browse/HADOOP-13206
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Affects Versions: 2.3.0, 2.6.1
> Reporter: Zhe Zhang
> Assignee: Zhe Zhang
> Attachments: HADOOP-13206.00.patch
>
>
> We have observed that an HDFS delegation token fetched by a 2.3.0 client
> cannot be used by a 2.6.1 client, and vice versa. Through some debugging I
> found that it's a mismatch between the token's {{service}} and the
> {{service}} of the filesystem (e.g. {{webhdfs://host.something.com:50070/}}).
> One would be in numerical IP address and one would be in non-numerical
> hostname format.
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