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https://issues.apache.org/jira/browse/HADOOP-10000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13779028#comment-13779028
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Jing Zhao commented on HADOOP-10000:
------------------------------------
Since all the corresponding code is in hadoop-common, move this jira here from
HDFS.
> Namenode log directory link is inaccessible in secure cluster
> -------------------------------------------------------------
>
> Key: HADOOP-10000
> URL: https://issues.apache.org/jira/browse/HADOOP-10000
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 3.0.0
> Reporter: Jing Zhao
> Assignee: Jing Zhao
> Attachments: HDFS-5217.000.patch, HDFS-5217.001.patch
>
>
> Currently in a secured HDFS cluster, 401 error is returned when clicking the
> "NameNode Logs" link.
> Looks like the cause of the issue is that the httpServer does not correctly
> set the security handler and the user realm currently, which causes the
> httpRequest.getRemoteUser (for the log URL) to return null and later be
> overwritten to the default web name (e.g., "dr.who") by the filter. In the
> meanwhile, in a secured cluster the log URL requires the http user to be an
> administrator. That's why we see the 401 error.
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