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https://issues.apache.org/jira/browse/HADOOP-13707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15582199#comment-15582199
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Brahma Reddy Battula commented on HADOOP-13707:
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[~eyang] As I mentioned above {{MetricsServlet.java}} changes are missed in
branch-2
[Commit|https://github.com/apache/hadoop/commit/439422fff923ae6aea1f7547fe24d0e23fbd8f7f#commitcomment-19446926]
,Please have a look at latest patch uploaded by [~yuanbo] for branch-2 and
branch-2.8..
May be you need revert from branch-2 and apply the latest patch for branch-2 OR
prepare addedum patch for only {{MetricsServlet.java}} changes.
> If kerberos is enabled while HTTP SPNEGO is not configured, some links cannot
> be accessed
> -----------------------------------------------------------------------------------------
>
> Key: HADOOP-13707
> URL: https://issues.apache.org/jira/browse/HADOOP-13707
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Yuanbo Liu
> Assignee: Yuanbo Liu
> Labels: security
> Fix For: 2.9.0, 3.0.0-alpha2
>
> Attachments: HADOOP-13707-branch-2-addendum.patch,
> HADOOP-13707-branch-2.8.patch, HADOOP-13707-branch-2.patch,
> HADOOP-13707.001.patch, HADOOP-13707.002.patch, HADOOP-13707.003.patch,
> HADOOP-13707.004.patch
>
>
> In {{HttpServer2#hasAdministratorAccess}}, it uses
> `hadoop.security.authorization` to detect whether HTTP is authenticated.
> It's not correct, because enabling Kerberos and HTTP SPNEGO are two steps. If
> Kerberos is enabled while HTTP SPNEGO is not, some links cannot be accessed,
> such as "/logs", and it will return error message as below:
> {quote}
> HTTP ERROR 403
> Problem accessing /logs/. Reason:
> User dr.who is unauthorized to access this page.
> {quote}
> We should make sure {{HttpServletRequest#getAuthType}} is not null before we
> invoke {{HttpServer2#hasAdministratorAccess}}.
> {{getAuthType}} means to get the authorization scheme of this request
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