[
https://issues.apache.org/jira/browse/HADOOP-12510?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14986104#comment-14986104
]
Todd Grayson commented on HADOOP-12510:
---------------------------------------
Herein lies the rub; the kerberos authentication was the fallback from the
token auth failing, the token auth failing was "invisible" from a scanning the
logs perspective?
The comment being, we should not be seeing kerberos auth at that moment, as its
an indication of a complete failure of the token authentication... so I guess
the ask is that token auth go out with a bang in the logs before things fail
back to kerberos authentication which will always fail in that context.
> Need improved WARN or ERROR when token based auth fails for kmsclient request
> -----------------------------------------------------------------------------
>
> Key: HADOOP-12510
> URL: https://issues.apache.org/jira/browse/HADOOP-12510
> Project: Hadoop Common
> Issue Type: Improvement
> Components: security
> Reporter: Todd Grayson
>
> When token based authentication fails, it would be helpful to have a WARN
> event of the failure, as well as a WARN event that alternative forms of
> authentication are being attempted.
> For example if token based authentication has failed; it appears that there
> is a fallback to attempting kerberos authentication. At that point the most
> prominent logging is a kerberos GSS error, when the actual issue was a
> failure at the token evaluation of a client access request to an HDFS
> encrypted zone.
> In the example below we are presented with a kerberos error, but the actual
> error was a failure of token authorization in an unexpected way.
> {code}
> 15/08/27 07:35:35 INFO mapreduce.Job: Task Id :
> attempt_1440594773177_0021_m_000009_0, Status : FAILED
> org.apache.hadoop.security.authentication.client.AuthenticationException:
> GSSException: No valid credentials provided (Mechanism level: Failed to find
> any Kerberos tgt)
> java.io.IOException:
> org.apache.hadoop.security.authentication.client.AuthenticationException:
> GSSException: No valid credentials provided (Mechanism level: Failed to find
> any Kerberos tgt)
> at
> {code}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
