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https://issues.apache.org/jira/browse/HADOOP-13707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15568753#comment-15568753
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Yuanbo Liu commented on HADOOP-13707:
-------------------------------------
[~jojochuang] Thanks for your comments.
{quote}
I feel like a correct approach is to add a SPENGO filter...
{quote}
Yes you're right, actually I'm ready to add a SPENGO filter with delegation
feature in HADOOP-13119. But as I said, enabling Kerberos and SPENGO are two
steps. If users enable Kerberos without SPENGO, that means the http sever of
the cluster is in non-security environment. In this situation, static user's
authorization shouldn't be checked.
In the very first installation of Hadoop, http sever is also in non-security
environment without any authorization check. So I think the behavior here
should be consistent and "dr.who" issue should be avoid.
Thanks again for your comments, looking forward to your response. :)
> 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
> Attachments: HADOOP-13707.001.patch, HADOOP-13707.002.patch,
> HADOOP-13707.003.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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