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Allen Wittenauer commented on HDFS-7546:
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+1 lgtm
> Document, and set an accepting default for dfs.namenode.kerberos.principal.pattern
> ----------------------------------------------------------------------------------
>
> Key: HDFS-7546
> URL: https://issues.apache.org/jira/browse/HDFS-7546
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: security
> Affects Versions: 2.1.1-beta
> Reporter: Harsh J
> Assignee: Harsh J
> Priority: Minor
> Labels: supportability
> Attachments: HDFS-7546.patch
>
>
> This config is used in the SaslRpcClient, and the no-default breaks cross-realm trust
principals being used at clients.
> Current location: https://github.com/apache/hadoop/blob/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/SaslRpcClient.java#L309
> The config should be documented and the default should be set to * to preserve the prior-to-introduction
behaviour.
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