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https://issues.apache.org/jira/browse/HADOOP-8589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13415545#comment-13415545
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Daryn Sharp commented on HADOOP-8589:
-------------------------------------
I'd like to see viewfs tests only accessing directories mounted under the
build.test.dir. There's been a number of recurring bugs centered around the
mounting of the user's home dir.
Are you aware the trash test tries to blow away your home directory to verify
it won't delete an ancestor of the trash dir? Shining illustration of why
everything should be under build.test.dir.
> ViewFs tests fail when tests dir is under Jenkins home dir
> ----------------------------------------------------------
>
> Key: HADOOP-8589
> URL: https://issues.apache.org/jira/browse/HADOOP-8589
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs, test
> Affects Versions: 0.23.1, 2.0.0-alpha
> Reporter: Andrey Klochkov
> Assignee: Andrey Klochkov
> Attachments: HADOOP-8859.patch
>
>
> TestFSMainOperationsLocalFileSystem fails in case when the test root
> directory is under the user's home directory, and the user's home dir is
> deeper than 2 levels from /. This happens with the default 1-node
> installation of Jenkins.
> This is the failure log:
> {code}
> org.apache.hadoop.fs.FileAlreadyExistsException: Path /var already exists as
> dir; cannot create link here
> at org.apache.hadoop.fs.viewfs.InodeTree.createLink(InodeTree.java:244)
> at org.apache.hadoop.fs.viewfs.InodeTree.<init>(InodeTree.java:334)
> at
> org.apache.hadoop.fs.viewfs.ViewFileSystem$1.<init>(ViewFileSystem.java:167)
> at
> org.apache.hadoop.fs.viewfs.ViewFileSystem.initialize(ViewFileSystem.java:167)
> at
> org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2094)
> at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:79)
> at
> org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2128)
> at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2110)
> at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:290)
> at
> org.apache.hadoop.fs.viewfs.ViewFileSystemTestSetup.setupForViewFileSystem(ViewFileSystemTestSetup.java:76)
> at
> org.apache.hadoop.fs.viewfs.TestFSMainOperationsLocalFileSystem.setUp(TestFSMainOperationsLocalFileSystem.java:40)
> ...
> Standard Output
> 2012-07-11 22:07:20,239 INFO mortbay.log (Slf4jLog.java:info(67)) - Home dir
> base /var/lib
> {code}
> The reason for the failure is that the code tries to mount links for both
> "/var" and "/var/lib", and it fails for the 2nd one as the "/var" is mounted
> already.
> The fix was provided in HADOOP-8036 but later it was reverted in HADOOP-8129.
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