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https://issues.apache.org/jira/browse/HADOOP-11628?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14605248#comment-14605248
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Steve Loughran commented on HADOOP-11628:
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OK: is there any reason why the patch as is SHOULD NOT go into 2.8?
Regarding options, SPNEGO isn't that broadly used in the Hadoop stack at least
with Jersey (KMS, WebHDFS & Timeline, each with their own client). I do want to
coalesce these with a single common HTTP/Jersey client. Having this feature in
without another config option would work better on Java 8, and avoid adding
another dimension to the configuration-space which is hadoop's -site.xml and
the tests around it. Assuming this is a no-op on Java 7, enabling it will give
consistent behaviour for Java 8, so it should not count as a regression there
> SPNEGO auth does not work with CNAMEs in JDK8
> ---------------------------------------------
>
> Key: HADOOP-11628
> URL: https://issues.apache.org/jira/browse/HADOOP-11628
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Affects Versions: 2.6.0
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Priority: Blocker
> Labels: jdk8
> Attachments: HADOOP-11628.patch
>
>
> Pre-JDK8, GSSName auto-canonicalized the hostname when constructing the
> principal for SPNEGO. JDK8 no longer does this which breaks the use of
> user-friendly CNAMEs for services.
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