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https://issues.apache.org/jira/browse/HADOOP-15092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16280000#comment-16280000
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Prabhu Joseph commented on HADOOP-15092:
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AuthorizationException does not provide stacktrace for security purposes.
Logger only prints the stacktrace of the Throwable and does not log the message
in case if stacktrace is empty. Attached a patch which returns the message
alone as part of printStackTrace() of AuthorizationException class.
> Proxy failures during NamenodeWebHdfsMethods are not logged
> ------------------------------------------------------------
>
> Key: HADOOP-15092
> URL: https://issues.apache.org/jira/browse/HADOOP-15092
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Affects Versions: 2.7.3
> Reporter: Prabhu Joseph
> Assignee: Prabhu Joseph
>
> When GetDelegationToken http request fails with proxy issue, there is no logs
> from NameNode to indicate it's a proxy issue. Below is the only log.
> IOExceptions are logged but AuthorizationException are not logged. It will be
> helpful to log proxy failures from JspHelper getUGI().
> {code}
> 2017-12-05 13:05:02,045 INFO namenode.GetDelegationTokenServlet
> (GetDelegationTokenServlet.java:doGet(56)) - Request for token received with
> no authentication from 172.26.93.73
> {code}
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