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https://issues.apache.org/jira/browse/HADOOP-13623?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15503280#comment-15503280
 ] 

Steve Loughran commented on HADOOP-13623:
-----------------------------------------

Note that this is potentially not a regression in s3n itself, more that a 
change in the tests has broken things. Test endpoint: s3 ireland
{code}
testRecursiveRootListing(org.apache.hadoop.fs.contract.s3n.ITestS3NContractRootDir)
  Time elapsed: 3.26 sec  <<< ERROR!
java.lang.IllegalArgumentException: Can not create a Path from an empty string
        at org.apache.hadoop.fs.Path.checkPathArg(Path.java:163)
        at org.apache.hadoop.fs.Path.<init>(Path.java:175)
        at org.apache.hadoop.fs.Path.<init>(Path.java:120)
        at 
org.apache.hadoop.fs.s3native.NativeS3FileSystem.listStatus(NativeS3FileSystem.java:577)
        at org.apache.hadoop.fs.FileSystem.listStatus(FileSystem.java:1539)
        at org.apache.hadoop.fs.FileSystem.listStatus(FileSystem.java:1582)
        at org.apache.hadoop.fs.FileSystem$4.<init>(FileSystem.java:1745)
        at 
org.apache.hadoop.fs.FileSystem.listLocatedStatus(FileSystem.java:1744)
        at 
org.apache.hadoop.fs.FileSystem.listLocatedStatus(FileSystem.java:1727)
        at org.apache.hadoop.fs.FileSystem$6.<init>(FileSystem.java:1826)
        at org.apache.hadoop.fs.FileSystem.listFiles(FileSystem.java:1822)
        at 
org.apache.hadoop.fs.contract.AbstractContractRootDirectoryTest.testRecursiveRootListing(AbstractContractRootDirectoryTest.java:171)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        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.RunBefores.evaluate(RunBefores.java:26)
        at 
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
        at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
        at 
org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
{code}

> regression: ITestS3NContractRootDir
> -----------------------------------
>
>                 Key: HADOOP-13623
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13623
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs/s3
>    Affects Versions: 2.8.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>
> I'm going to point the blame at HADOOP-13207; the new test is failing on S3n. 
> Somehow this wasn't showing up in tests until recently



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