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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12603) TestSymlinkLocalFSFileContext#testSetTimesSymlinkToDir occasionally fail
Date Tue, 12 Jan 2016 20:43:39 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12603?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15094902#comment-15094902
] 

Chris Nauroth commented on HADOOP-12603:
----------------------------------------

bq. well, I don't see the value of this test.

The value I see is that it verifies {{RawLocalFileSystem}} is implemented correctly to support
{{hdfs dfs -copyToLocal -p}}.  Again quoting one of my earlier comments:

{quote}
One use case for setting atime on the local file system is {{hdfs dfs -copyToLocal -p}}. The
expected semantics are to retain the atime stored in HDFS when the file lands on the local
file system. Prior to HADOOP-12045, that wouldn't have worked correctly.
{quote}

Thanks, everyone.  I'll plan on committing this later.

> 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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