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https://issues.apache.org/jira/browse/HDFS-240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12837656#action_12837656
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Eli Collins commented on HDFS-240:
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+1 to restricting names.  Since Paths are URIs the restrictions need to jive 
with RFC 1630 and RFC 3986. We should also consider file names allowed by 
applications that use Hadoop.

> Should HDFS restrict the names used for files?
> ----------------------------------------------
>
>                 Key: HDFS-240
>                 URL: https://issues.apache.org/jira/browse/HDFS-240
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>            Reporter: Robert Chansler
>
> When reviewing the consequences of Hadoop:6017 (the name system could not 
> start because a file name interpreted as a regex caused a fault), the 
> discussion turned to improving the test set for file system functions by 
> broadening the set of names used for testing. Presently, HDFS allows any name 
> without a slash. _Should the space of names be restricted?_ If most funny 
> names are unintended, maybe the user would benefit from an early error 
> indication. A contrary view is that restricting names is so 20th-century.
> Should be or shouldn't we?

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