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https://issues.apache.org/jira/browse/HADOOP-6059?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12720397#action_12720397
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Jakob Homan commented on HADOOP-6059:
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If it's decided to make naming more restrictive, a conversion process would
need to be created (during upgrade?) for newly verboten file names. I've seen
names that were inadvertently created (with things such as carriage returns
embedded) while doing work on the offline image viewer. They're out there and
would need to be accounted for.
> Should HDFS restrict the names used for files?
> ----------------------------------------------
>
> Key: HADOOP-6059
> URL: https://issues.apache.org/jira/browse/HADOOP-6059
> Project: Hadoop Core
> Issue Type: New Feature
> Components: dfs
> Affects Versions: 0.20.0
> 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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