[jira] Updated: (DERBY-3258) 'Unexpected row count: expected:<0> but was:<3>' in testReleaseCompileLocks

["Knut Anders Hatlen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DERBY-3258?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Knut Anders Hatlen updated DERBY-3258:
--------------------------------------

    Attachment: d3258.diff

I am able to reproduce this fairly quickly in my environment if I start five threads running this test in a loop. Most of the time it's the assert on line 146 that fails, but sometimes it's the assert on line 140.

With the attached patch, which makes the test wait for the post commit thread to complete before it queries the lock table, I'm not able to reproduce the failure anymore.

> 'Unexpected row count: expected:<0> but was:<3>' in testReleaseCompileLocks
> ---------------------------------------------------------------------------
>
>                 Key: DERBY-3258
>                 URL: https://issues.apache.org/jira/browse/DERBY-3258
>             Project: Derby
>          Issue Type: Bug
>          Components: Test
>    Affects Versions: 10.4.1.3
>         Environment: OS: Solaris Nevada snv_27a X86 64 bits - SunOS 5.11 snv_27
> VJM: Sun Microsystems Inc. 1.6.0-b105
>            Reporter: Ole Solberg
>            Assignee: Knut Anders Hatlen
>            Priority: Minor
>         Attachments: d3258.diff
>
>
> Seen in http://dbtg.thresher.com/derby/test/trunk16/jvmAll/testing/Limited/testSummary-601462.html : JDK16Jvm1.6SunOS-5.11 i86pc-i386.
> There was 1 failure:
> 1) testReleaseCompileLocks(org.apache.derbyTesting.functionTests.tests.lang.ReleaseCompileLocksTest)junit.framework.AssertionFailedError: Unexpected row count: expected:<0> but was:<3>
> 	at org.apache.derbyTesting.junit.JDBC.assertDrainResults(JDBC.java:596)
> 	at org.apache.derbyTesting.junit.JDBC.assertEmpty(JDBC.java:490)
> 	at org.apache.derbyTesting.functionTests.tests.lang.ReleaseCompileLocksTest.testReleaseCompileLocks(ReleaseCompileLocksTest.java:146)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at org.apache.derbyTesting.junit.BaseTestCase.runBare(BaseTestCase.java:95)
> 	at junit.extensions.TestDecorator.basicRun(TestDecorator.java:22)
> 	at junit.extensions.TestSetup$1.protect(TestSetup.java:19)
> 	at junit.extensions.TestSetup.run(TestSetup.java:23)
> 	at org.apache.derbyTesting.junit.BaseTestSetup.run(BaseTestSetup.java:57)

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