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https://issues.apache.org/jira/browse/DERBY-6500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13930275#comment-13930275
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Rick Hillegas commented on DERBY-6500:
--------------------------------------

The queries in this test do not have ORDER BY clauses on them so the row order 
is not deterministic. It's likely that these errors would disappear if ORDER BY 
clauses were added to the queries. Thanks.

> intermittent error in nightly regression tests: AutoIncrementTest
> -----------------------------------------------------------------
>
>                 Key: DERBY-6500
>                 URL: https://issues.apache.org/jira/browse/DERBY-6500
>             Project: Derby
>          Issue Type: Bug
>          Components: Test
>    Affects Versions: 10.10.1.4
>            Reporter: Mike Matrigali
>
> junit.framework.AssertionFailedError: Column value mismatch @ column 
> 'COLUMNNAME', row 1:
>     Expected: >A_ZERO<
>     Found:    >A_ONE<
>       at 
> org.apache.derbyTesting.junit.JDBC.assertRowInResultSet(JDBC.java:1277)
>       at 
> org.apache.derbyTesting.junit.JDBC.assertRowInResultSet(JDBC.java:1189)
>       at 
> org.apache.derbyTesting.junit.JDBC.assertFullResultSetMinion(JDBC.java:1076)
>       at org.apache.derbyTesting.junit.JDBC.assertFullResultSet(JDBC.java:999)
>       at org.apache.derbyTesting.junit.JDBC.assertFullResultSet(JDBC.java:956)
>       at org.apache.derbyTesting.junit.JDBC.assertFullResultSet(JDBC.java:914)
>       at 
> org.apache.derbyTesting.functionTests.tests.lang.AutoIncrementTest.testderbyIncrementTest(AutoIncrementTest.java:167)
>       at 
> org.apache.derbyTesting.junit.BaseTestCase.runBare(BaseTestCase.java:118)
>       at 
> org.apache.derbyTesting.junit.BaseJDBCTestCase.runBareOverridable(BaseJDBCTestCase.java:442)
>       at 
> org.apache.derbyTesting.junit.BaseJDBCTestCase.runBare(BaseJDBCTestCase.java:459)
>       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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