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https://issues.apache.org/jira/browse/HADOOP-9129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13528724#comment-13528724
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Chris Nauroth commented on HADOOP-9129:
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This came from discussion in HADOOP-8957, a patch that made some changes to
file name validation in the {{AbstractFileSystem}} and {{FileSystem}} class
hierarchies. We noticed that for {{ViewFs}} there is insufficient validation
enforced on the internal names in the mount table at initialization time.
Right now, the only such validation that occurs at initialization time is a
check for {{Path#isAbsoluteAndSchemAuthorityNull}} inside
{{InodeTree#createLink}}.
First, we would need to agree on the rules. Two possibilities:
# Match HDFS validation rules.
# Check the union of the validation rules for all mounted file systems, so that
users see consistent path names across the whole ViewFS.
> ViewFs does not validate internal names in the mount table
> ----------------------------------------------------------
>
> Key: HADOOP-9129
> URL: https://issues.apache.org/jira/browse/HADOOP-9129
> Project: Hadoop Common
> Issue Type: Bug
> Components: viewfs
> Affects Versions: 3.0.0
> Reporter: Chris Nauroth
>
> Currently, there is no explicit validation of {{ViewFs}} internal names in
> the mount table during initialization.
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