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https://issues.apache.org/jira/browse/HADOOP-16971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17086564#comment-17086564
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Ctest commented on HADOOP-16971:
--------------------------------
Yes, I pushed a patch that ensures the symlink will be deleted before deleting
the original file. So when the test finishes, both the file and the symlink
will be deleted successfully and not affect the second run.
> testFileContextResolveAfs creates dangling link and fails for subsequent runs
> -----------------------------------------------------------------------------
>
> Key: HADOOP-16971
> URL: https://issues.apache.org/jira/browse/HADOOP-16971
> Project: Hadoop Common
> Issue Type: Bug
> Components: common, fs, test
> Affects Versions: 3.2.1, 3.4.0
> Reporter: Ctest
> Priority: Minor
> Labels: easyfix, fs, symlink, test
> Attachments: HADOOP-16971.000.patch
>
>
> In the test testFileContextResolveAfs, the symlink TestFileContextResolveAfs2
> (linked to TestFileContextResolveAfs1) cannot be deleted when the test
> finishes.
> This is because TestFileContextResolveAfs1 was always deleted before
> TestFileContextResolveAfs2 when they were both passed into
> FileSystem#deleteOnExit. This caused TestFileContextResolveAfs2 to become a
> dangling link, which FileSystem in Hadoop currently cannot delete. (This is
> because Files#exists will return false for dangling links.)
> As a result, the test `testFileContextResolveAfs` only passed for the first
> run. And for later runs of this test, it will fail by throwing the following
> exception:
> {code:java}
> fs.FileUtil (FileUtil.java:symLink(821)) - Command 'ln -s
> mypath/TestFileContextResolveAfs1 mypath/TestFileContextResolveAfs2' failed 1
> with: ln: mypath/TestFileContextResolveAfs2: File exists
> java.io.IOException: Error 1 creating symlink
> file:mypath/TestFileContextResolveAfs2 to mypath/TestFileContextResolveAfs1
> {code}
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