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Posted to common-issues@hadoop.apache.org by "Ayush Saxena (Jira)" <ji...@apache.org> on 2020/04/19 20:29:00 UTC
[jira] [Updated] (HADOOP-16971)
TestFileContextResolveAfs#testFileContextResolveAfs creates dangling link
and fails for subsequent runs
[ https://issues.apache.org/jira/browse/HADOOP-16971?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ayush Saxena updated HADOOP-16971:
----------------------------------
Summary: TestFileContextResolveAfs#testFileContextResolveAfs creates dangling link and fails for subsequent runs (was: testFileContextResolveAfs creates dangling link and fails for subsequent runs)
> TestFileContextResolveAfs#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
> Assignee: 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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