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https://issues.apache.org/jira/browse/HADOOP-12603?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15033590#comment-15033590
 ] 

Alan Burlison commented on HADOOP-12603:
----------------------------------------

I'm concerned that we are just disabling tests rather than understanding what 
the correct semantics should be. There are also ownership test failures on 
Solaris related to symlinks so there are clearly more general issues at play 
here, rather than just time-related ones.

What are the assumptions that are being made about Linux behaviour by these 
tests?

> TestSymlinkLocalFSFileContext#testSetTimesSymlinkToDir occasionally fail
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-12603
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12603
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Wei-Chiu Chuang
>            Assignee: Wei-Chiu Chuang
>              Labels: solaris, windows
>         Attachments: HADOOP-12603.001.patch, HADOOP-12603.002.patch
>
>
> I have observed this test failure a few times in the past. When it fails, the 
> expected access time (of the file link) is always 1000 less than the actual 
> access time.
> Error Message
> {noformat}
> expected:<1448478654000> but was:<1448478655000>
> {noformat}
> Stacktrace
> {noformat}
> java.lang.AssertionError: expected:<1448478654000> but was:<1448478655000>
>       at org.junit.Assert.fail(Assert.java:88)
>       at org.junit.Assert.failNotEquals(Assert.java:743)
>       at org.junit.Assert.assertEquals(Assert.java:118)
>       at org.junit.Assert.assertEquals(Assert.java:555)
>       at org.junit.Assert.assertEquals(Assert.java:542)
>       at 
> org.apache.hadoop.fs.SymlinkBaseTest.testSetTimesSymlinkToDir(SymlinkBaseTest.java:1391)
>       at 
> org.apache.hadoop.fs.TestSymlinkLocalFS.testSetTimesSymlinkToDir(TestSymlinkLocalFS.java:233)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:606)
>       at 
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
>       at 
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
>       at 
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
>       at 
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
>       at 
> org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
> {noformat}
> Standard Output
> {noformat}
> 2015-11-25 19:10:55,231 WARN  fs.FileUtil (FileUtil.java:symLink(813)) - 
> Command 'ln -s 
> /testptch/hadoop/hadoop-common-project/hadoop-common/target/test/data/4/vae1ng5t75/test1/file
>  
> /testptch/hadoop/hadoop-common-project/hadoop-common/target/test/data/4/vae1ng5t75/test2/linkToFile'
>  failed 1 with: ln: failed to create symbolic link 
> '/testptch/hadoop/hadoop-common-project/hadoop-common/target/test/data/4/vae1ng5t75/test2/linkToFile':
>  No such file or directory
> 2015-11-25 19:10:56,212 WARN  fs.FileUtil (FileUtil.java:symLink(813)) - 
> Command 'ln -s 
> /testptch/hadoop/hadoop-common-project/hadoop-common/target/test/data/4/vae1ng5t75/test1/file
>  
> /testptch/hadoop/hadoop-common-project/hadoop-common/target/test/data/4/vae1ng5t75/test1/linkToFile'
>  failed 1 with: ln: failed to create symbolic link 
> '/testptch/hadoop/hadoop-common-project/hadoop-common/target/test/data/4/vae1ng5t75/test1/linkToFile':
>  File exists
> {noformat}



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