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https://issues.apache.org/jira/browse/HDFS-4632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13740732#comment-13740732
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Ivan Mitic commented on HDFS-4632:
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I am also fine with Chris’ proposal #1 from above. Changing path behavior would
indeed break many downstream projects. The fact that java.io.File converts all
paths to backslash-paths on Windows additionally complicates things.
I also did investigation on Windows paths in Hadoop a while back, and this
issue came up. On top of the above 3 proposals, we have 2 other options:
4. Replace backslash with a forward slash only if the backslash is not followed
by a meta-character ('*', '?', etc.). This can be achieved through a negative
look ahead regular expression (regex = "\\\\(?!(\\*|\\?))").
5. Use '^' as an escape character on the Windows platform
- On the negative side, this model would push the platform differences to
platforms built on top of Hadoop instead of keeping them consistent. Hadoop
documentation broadly available could still get someone to make a mistake
described in HADOOP-8139. Just adding this for completeness, I don’t think we
want to go this route.
#3 seems like a nice long term solution. We would have to do a deeper dive on
what would it take to do it/prototyping, but seems like a good proposal from
high-level.
> globStatus using backslash for escaping does not work on Windows
> ----------------------------------------------------------------
>
> Key: HDFS-4632
> URL: https://issues.apache.org/jira/browse/HDFS-4632
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.0.0, 2.1.1-beta
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Attachments: HDFS-4632-trunk.patch
>
>
> {{Path}} normalizes backslashes to forward slashes on Windows. Later, when
> passed to {{FileSystem#globStatus}}, the path is no longer treated as an
> escape sequence.
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