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https://issues.apache.org/jira/browse/BOOKKEEPER-834?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Ivan Kelly updated BOOKKEEPER-834:
----------------------------------
    Fix Version/s:     (was: 4.3.1)
                   4.4.0

> test case error in test class TestDiskChecker
> ---------------------------------------------
>
>                 Key: BOOKKEEPER-834
>                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-834
>             Project: Bookkeeper
>          Issue Type: Bug
>          Components: bookkeeper-server
>         Environment: Linux /tmp dir size > 2GB
>            Reporter: zhaijia
>            Assignee: zhaijia
>             Fix For: 4.4.0
>
>
> In test class TestDiskChecker, test case will fail if tmp dir's usableSpace / 
> totalSpace > 0.95, because threshold will be a negative number.
> {code}
>      public void testCheckDiskFull() throws IOException {
>         File file = File.createTempFile("DiskCheck", "test");
>         long usableSpace = file.getUsableSpace();
>         long totalSpace = file.getTotalSpace();
>         float threshold =
>                 (1f - ((float) usableSpace / (float) totalSpace)) - 0.05f;    
>     
>  < === if "usableSpace / totalSpace" is 0.99, then threshold is -0.04, this 
> is invalid.
>         diskChecker.setDiskSpaceThreshold(threshold, threshold);
>         diskChecker.checkDiskFull(file);
>     }
> {code}
> in my running of test:
>   1 
> -------------------------------------------------------------------------------
>   2 Test set: org.apache.bookkeeper.util.TestDiskChecker
>   3 
> -------------------------------------------------------------------------------
>   4 Tests run: 4, Failures: 0, Errors: 2, Skipped: 0, Time elapsed: 0.557 sec 
> <<< FAILURE!
>   5 testCheckDiskFull(org.apache.bookkeeper.util.TestDiskChecker)  Time 
> elapsed: 0.066 sec  <<< ERROR!
>   6 java.lang.Exception: Unexpected exception, 
> expected<org.apache.bookkeeper.util.DiskChecker$DiskOutOfSpaceException> but 
> was<java.lang.IllegalArgumentException>
>   7     at 
> org.junit.internal.runners.statements.ExpectException.evaluate(ExpectException.java:28)
>   8     at 
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
>   9     at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
>  10     at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
>  11     at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
>  12     at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
>  13     at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
>  14     at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
>  15     at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
>  16     at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
>  17     at 
> org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:53)
>  18     at 
> org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:123)
>  19     at 
> org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:104)
>  20     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>  21     at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>  22     at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>  23     at java.lang.reflect.Method.invoke(Method.java:606)
>  24     at 
> org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:164)
>  25     at 
> org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:110)
>  26     at 
> org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:172)
>  27     at 
> org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcessWhenForked(SurefireStarter.java:78)
>  28     at 
> org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:70)
>  29 Caused by: java.lang.IllegalArgumentException: Disk space threashold 
> -0.04741608 is not valid. Should be > 0 and < 1              < ======
>  30     at 
> org.apache.bookkeeper.util.DiskChecker.validateThreshold(DiskChecker.java:163)
>  31     at 
> org.apache.bookkeeper.util.DiskChecker.setDiskSpaceThreshold(DiskChecker.java:157)
>  32     at 
> org.apache.bookkeeper.util.TestDiskChecker.testCheckDiskFull(TestDiskChecker.java:51)
>  33     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>  34     at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>  35     at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>  36     at java.lang.reflect.Method.invoke(Method.java:606)
>  37     at 
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
>  38     at 
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
>  39     at 
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
>  40     at 
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
>  41     at 
> org.junit.internal.runners.statements.ExpectException.evaluate(ExpectException.java:21)
>  42     ... 21 more
> print out vars in test to verify these values: 
> 2015-01-13 12:42:58,448 - INFO  - [main:TestDiskCheckerTest@78] - 
> usableSpace:2062532608, totalSpace:2073448448, threshold: -0.04473542



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