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https://issues.apache.org/jira/browse/HADOOP-6585?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12864441#action_12864441
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Sanjay Radia commented on HADOOP-6585:
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> Therefore I propose that we do not modify the isDir.
That has also always been my position: not modify isDir() but simply deprecate
and add a new isDirectory().
When we added symlinks, isDir became ambiguous.
Good news is that by time folks add actual symlinks to their namespaces,
applications have had a chance to
move to isDirectory().
> Add FileStatus#isDirectory and isFile
> -------------------------------------
>
> Key: HADOOP-6585
> URL: https://issues.apache.org/jira/browse/HADOOP-6585
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs
> Affects Versions: 0.21.0, 0.22.0
> Reporter: Eli Collins
> Assignee: Eli Collins
> Priority: Blocker
> Fix For: 0.21.0, 0.22.0
>
> Attachments: hadoop-6585-1.patch, hadoop-6585-2.patch,
> hadoop-6585-3.patch
>
>
> Per Sanjay's suggestion in HADOOP-6421 let's deprecate FileStatus#isDir() and
> add isDirectory() and isFile() to compliment isSymlink. Currently clients
> assume !isDir() implies a file, which is no longer true with symlinks. I'll
> file a separate jira to change the various uses of !isDir() to be isFile() or
> isFile() or isSymlink() as appropriate.
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