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From "Eric Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-16214) Kerberos name implementation in Hadoop does not accept principals with more than two components
Date Tue, 02 Apr 2019 18:29:05 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-16214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16808001#comment-16808001
] 

Eric Yang commented on HADOOP-16214:
------------------------------------

[~xkrogen] [~ibuenros] [~stevel@apache.org], I think this issue is ready for review.  Any
takers?

> Kerberos name implementation in Hadoop does not accept principals with more than two
components
> -----------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-16214
>                 URL: https://issues.apache.org/jira/browse/HADOOP-16214
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: auth
>            Reporter: Issac Buenrostro
>            Priority: Major
>         Attachments: HADOOP-16214.001.patch, HADOOP-16214.002.patch, HADOOP-16214.003.patch,
HADOOP-16214.004.patch, HADOOP-16214.005.patch, HADOOP-16214.006.patch
>
>
> org.apache.hadoop.security.authentication.util.KerberosName is in charge of converting
a Kerberos principal to a user name in Hadoop for all of the services requiring authentication.
> Although the Kerberos spec ([https://web.mit.edu/kerberos/krb5-1.5/krb5-1.5.4/doc/krb5-user/What-is-a-Kerberos-Principal_003f.html]) allows
for an arbitrary number of components in the principal, the Hadoop implementation will throw
a "Malformed Kerberos name:" error if the principal has more than two components (because
the regex can only read serviceName and hostName).



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