org.apache.hadoop.fs.viewfs.InodeTree.createLink(...) may throw java.lang.ArrayIndexOutOfBoundsException

org.apache.hadoop.fs.viewfs.InodeTree.createLink(...) may throw java.lang.ArrayIndexOutOfBoundsException as breakIntoPathComponents(src) may return Empty Array "[]". this happened when run the test case of viewfs on my jenkins server. In my situation, "/" is passed into breakIntoPathComponents() as its param "src".

Here is the Message given by Jenkins:

java.lang.ArrayIndexOutOfBoundsException: 1
at org.apache.hadoop.fs.viewfs.InodeTree.createLink(InodeTree.java:237)
at org.apache.hadoop.fs.viewfs.InodeTree.<init>(InodeTree.java:334)
at org.apache.hadoop.fs.viewfs.ViewFileSystem$1.<init>(ViewFileSystem.java:178)
at org.apache.hadoop.fs.viewfs.ViewFileSystem.initialize(ViewFileSystem.java:178)
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2150)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:80)
at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2184)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2166)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:302)
at org.apache.hadoop.fs.viewfs.ViewFileSystemTestSetup.setupForViewFileSystem(ViewFileSystemTestSetup.java:64)
at org.apache.hadoop.fs.viewfs.TestFSMainOperationsLocalFileSystem.setUp(TestFSMainOperationsLocalFileSystem.java:40)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:27)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:236)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:134)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:113)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:103)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:74)

Standard Output
2012-08-22 10:31:40,487 INFO mortbay.log (Slf4jLog.java:info(67)) - Home dir base /