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https://issues.apache.org/jira/browse/DERBY-5427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13113158#comment-13113158
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Lily Wei commented on DERBY-5427:
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The test generates more than 20 unauthorized shutdown errors. The numbers of
javacore files depend on number of the same unauthorized shutdown error. To fix
this from error point of view, we need to increase the error level for “ERROR
08004: Database connection refused”. As fix for DERBY-4856, we did not decide
to change the error level for ERROR 08004. This is a good time to revisit this
issue. Should we increase the error level for ERROR 08004 to be higher to avoid
the javacore for IBM JVM instead of the workaround fix by setting
derby.stream.error.extendedDiagSeverityLevel to 50000?
> Unauthorized shutdown should not generate thread dump and javacore.
> AuthenticationTest dumps over 20 javacores with IBM JVM for normal user errors
> --------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-5427
> URL: https://issues.apache.org/jira/browse/DERBY-5427
> Project: Derby
> Issue Type: Bug
> Components: Services
> Affects Versions: 10.8.2.1
> Reporter: Kathey Marsden
> Priority: Critical
>
> If jdbcapi.AuthenticationTest is run without changing the
> derby.stream.error.extendedDiagSeverityLevel as is done in the test, it
> generates thread dumps and javacores for IBM jvms. I beleive the errors in
> this test are expected user errors and not crashes so they should *not*
> generate a thread dump or javacore. To reproduce remove this line from test:
> //Derby-4856,set the property to avoid thread dump and diagnostic info
> sysprops.put("derby.stream.error.extendedDiagSeverityLevel","50000");
> Until fixed, users can work around the issue by setting
> derby.stream.error.extendedDiagSeverityLevel to 50000 as is done in the test.
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