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https://issues.apache.org/jira/browse/HDFS-4983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13839338#comment-13839338
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Fengdong Yu commented on HDFS-4983:
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yes, ok for me.
> Numeric usernames do not work with WebHDFS FS
> ---------------------------------------------
>
> Key: HDFS-4983
> URL: https://issues.apache.org/jira/browse/HDFS-4983
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: webhdfs
> Affects Versions: 2.0.0-alpha
> Reporter: Harsh J
> Assignee: Yongjun Zhang
> Labels: patch
> Attachments: HDFS-4983.001.patch, HDFS-4983.002.patch,
> HDFS-4983.003.patch
>
>
> Per the file
> hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/resources/UserParam.java,
> the DOMAIN pattern is set to: {{^[A-Za-z_][A-Za-z0-9._-]*[$]?$}}.
> Given this, using a username such as "123" seems to fail for some reason
> (tried on insecure setup):
> {code}
> [123@host-1 ~]$ whoami
> 123
> [123@host-1 ~]$ hadoop fs -fs webhdfs://host-2.domain.com -ls /
> -ls: Invalid value: "123" does not belong to the domain
> ^[A-Za-z_][A-Za-z0-9._-]*[$]?$
> Usage: hadoop fs [generic options] -ls [-d] [-h] [-R] [<path> ...]
> {code}
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