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From "Myrna van Lunteren (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DERBY-5440) test failure in testBTreeForwardScan_fetchRows_resumeAfterWait_nonUnique_split(org.apache.derbyTesting.functionTests.tests.store.IndexSplitDeadlockTest)junit.framework.AssertionFailedError: expected:<1> but was:<0>
Date Fri, 30 Sep 2011 19:45:45 GMT
test failure in testBTreeForwardScan_fetchRows_resumeAfterWait_nonUnique_split(org.apache.derbyTesting.functionTests.tests.store.IndexSplitDeadlockTest)junit.framework.AssertionFailedError:
expected:<1> but was:<0>
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

                 Key: DERBY-5440
                 URL: https://issues.apache.org/jira/browse/DERBY-5440
             Project: Derby
          Issue Type: Bug
          Components: Test
    Affects Versions: 10.8.2.1
         Environment: IBM iseries 6.1, Classic 1.6 JVM
            Reporter: Myrna van Lunteren
            Priority: Trivial


During the QA Cycle for 10.8.2.1 I also ran on a next version of the iseries OS, and saw this
failure. It did not reproduce when I reran the test by itself. The test has the following
comment:
       // Give the other thread time to obtain the lock
        Thread.sleep(1000);

        // Perform an index scan. Will be blocked for a while when fetching
        // the row where x=100, but should be able to resume the scan.
        ResultSet rs = s.executeQuery(
                "select * from t --DERBY-PROPERTIES index=IDX");
        for (int i = 0; i < 300; i++) {
            assertTrue(rs.next());
            assertEquals(i, rs.getInt(1));                           <==== this is the
line of the failure.
        }

I think this is a rather slow machine, and that's likely why I saw the failure, perhaps the
sleep wasn't long enough on this machine.
Here is the stack trace:

1) testBTreeForwardScan_fetchRows_resumeAfterWait_nonUnique_split(org.apache.derbyTesting.functionTests.tests.store.IndexSplitDeadlockTest)junit.framework.AssertionFailedError:
expected:<1> but was:<0>
	at java.lang.Throwable.<init>(Throwable.java:195)
	at java.lang.Error.<init>(Error.java:49)
	at junit.framework.AssertionFailedError.<init>(AssertionFailedError.java:13)
	at org.apache.derbyTesting.functionTests.tests.store.IndexSplitDeadlockTest.testBTreeForwardScan_fetchRows_resumeAfterWait_nonUnique_split(IndexSplitDeadlockTest.java:526)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:27)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at org.apache.derbyTesting.junit.BaseTestCase.runBare(BaseTestCase.java:92)
	at junit.extensions.TestDecorator.basicRun(TestDecorator.java:24)
	at junit.extensions.TestSetup$1.protect(TestSetup.java:21)
	at junit.extensions.TestSetup.run(TestSetup.java:25)
	at org.apache.derbyTesting.junit.BaseTestSetup.run(BaseTestSetup.java:57)
	at junit.extensions.TestDecorator.basicRun(TestDecorator.java:24)
	at junit.extensions.TestSetup$1.protect(TestSetup.java:21)
	at junit.extensions.TestSetup.run(TestSetup.java:25)
	at org.apache.derbyTesting.junit.BaseTestSetup.run(BaseTestSetup.java:57)

derby.log has no useful info.

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