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https://issues.apache.org/jira/browse/HDFS-12849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16261847#comment-16261847
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Bharat Viswanadham commented on HDFS-12849:
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HADOOP-14229 jira should be backported to branch-2 to fix this issue in
branch-2 releases.
> Update the auth_to_local rules documentation in hadoop documentation
> --------------------------------------------------------------------
>
> Key: HDFS-12849
> URL: https://issues.apache.org/jira/browse/HDFS-12849
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Bharat Viswanadham
> Assignee: Bharat Viswanadham
>
> <property>
> <name>hadoop.security.auth_to_local</name>
> <value>
> RULE:[2:$1@$0](nn/.*@.*REALM.TLD)s/.*/hdfs/
> RULE:[2:$1@$0](jn/.*@.*REALM.TLD)s/.*/hdfs/
> RULE:[2:$1@$0](dn/.*@.*REALM.TLD)s/.*/hdfs/
> RULE:[2:$1@$0](nm/.*@.*REALM.TLD)s/.*/yarn/
> RULE:[2:$1@$0](rm/.*@.*REALM.TLD)s/.*/yarn/
> RULE:[2:$1@$0](jhs/.*@.*REALM.TLD)s/.*/mapred/
> DEFAULT
> </value>
> </property>
>
> As the first part is translating to nn@REALM, so the expression is not
> matching, and the replacement is not happening.
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