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https://issues.apache.org/jira/browse/HADOOP-16214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16807244#comment-16807244
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Eric Yang commented on HADOOP-16214:
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Patch 6 fixed white space.
> 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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