Andrey Klochkov created HADOOP-8589:
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Summary: 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: 2.0.0-alpha, 0.23.1
Reporter: Andrey Klochkov
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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