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https://issues.apache.org/jira/browse/DERBY-6306?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Knut Anders Hatlen updated DERBY-6306:
--------------------------------------
Attachment: d6306-1a.diff
Attaching d6306-1a.diff which makes XplainStatisticsTest clear the statement
cache from its setUp() method, so that the test cases needn't worry about what
the earlier test cases did.
The method that clears the statement cache has been separated out in a helper
method, BaseJDBCTestCase.emptyStatementCache(), so that it can be reused. (It's
used in a similar way in StatementPlanCacheTest.)
This seems to have taken care of the intermittent failure in my environment.
> XplainStatisticsTest.testSimpleQuery: BEGIN_COMP_TIME unexpectedly NULL
> -----------------------------------------------------------------------
>
> Key: DERBY-6306
> URL: https://issues.apache.org/jira/browse/DERBY-6306
> Project: Derby
> Issue Type: Bug
> Components: Test
> Affects Versions: 10.11.0.0
> Environment: windows_ia32_jdk7
> windows_amd64_jdk8
> Reporter: Knut Anders Hatlen
> Attachments: d6306-1a.diff
>
>
> Seen on two platforms in nightly testing of trunk revision 1506904:
> http://download.java.net/javadesktop/derby/request_5579443/javadb-task-3691350.html
> http://download.java.net/javadesktop/derby/request_5579443/javadb-task-3691354.html
> junit.framework.AssertionFailedError: BEGIN_COMP_TIME unexpectedly NULL
> at
> org.apache.derbyTesting.functionTests.tests.lang.XplainStatisticsTest.getNonNullTimestamp(XplainStatisticsTest.java:1538)
> at
> org.apache.derbyTesting.functionTests.tests.lang.XplainStatisticsTest.verifySensibleStatementTimings(XplainStatisticsTest.java:1417)
> at
> org.apache.derbyTesting.functionTests.tests.lang.XplainStatisticsTest.testSimpleQuery(XplainStatisticsTest.java:1038)
> at
> org.apache.derbyTesting.junit.BaseTestCase.runBare(BaseTestCase.java:117)
> at
> org.apache.derbyTesting.junit.BaseJDBCTestCase.runBareOverridable(BaseJDBCTestCase.java:439)
> at
> org.apache.derbyTesting.junit.BaseJDBCTestCase.runBare(BaseJDBCTestCase.java:456)
> 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 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)
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