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From "Harsh J (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8589) ViewFs tests fail when tests and home dirs are nested
Date Sat, 13 Oct 2012 13:24:04 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13475605#comment-13475605
] 

Harsh J commented on HADOOP-8589:
---------------------------------

bq. Harsh what did you mean in your comment above - did you run the tests with the home directory
or wd set to the above 3 paths?

I created 3 users - bar, harsh and foo with those HOME dirs and cloned the patched trunk repo
into each of them to run the tests from (i.e. in an su'd environment).

Lemme know if you'd like me to repeat the tests with your patch!
                
> ViewFs tests fail when tests and home dirs are nested
> -----------------------------------------------------
>
>                 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-8589.patch, HADOOP-8589.patch, hadoop-8589-sanjay.patch,
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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