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https://issues.apache.org/jira/browse/DERBY-2905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12993166#comment-12993166
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Rick Hillegas commented on DERBY-2905:
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I have looked at the DERBY-2905_part2_2_3.diff patch. It does indeed make
Driver40Test succeed. But that is because it disables the tests which
Driver40Test is trying to perform. The actual functionality remains broken.
After reloading the engine on Java 6 or higher, the registered driver should be
an AutoloadedDriver40. That is because that is the driver which contains the
getParentLogger() method required by JDBC 4.1. The getParentLogger() method
does not exist in AutoloadedDriver.
Here is the output of ww.java after applying this patch:
org.apache.derby.jdbc.AutoloadedDriver40@42b307f0
org.apache.derby.jdbc.AutoloadedDriver@236acdd1
Both lines should report an AutoloadedDriver40.
> Shutting down embedded Derby does not remove all code, the AutoloadDriver is
> left registered in the DriverManager.
> ------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-2905
> URL: https://issues.apache.org/jira/browse/DERBY-2905
> Project: Derby
> Issue Type: Bug
> Components: JDBC
> Affects Versions: 10.2.2.0, 10.3.1.4, 10.4.1.3
> Reporter: Daniel John Debrunner
> Assignee: Lily Wei
> Attachments: DERBY-2905-2.diff, DERBY-2905_1.diff, DERBY-2905_3.diff,
> DERBY-2905_part2_1.diff, DERBY-2905_part2_2.diff, DERBY-2905_part2_2_1.diff,
> DERBY-2905_part2_2_2.diff, DERBY-2905_part2_2_3.diff, DERBY-2905v0.diff,
> DERBY-2905v0.stat, DERBY-2905v1.diff, DERBY-2905v1.stat, DERBY-2905v3.diff,
> DERBY-2905v3.stat, Main.java, Mainv1.java, Repro2905.java, ww.java
>
>
> After a shutdown of the embedded driver the AutoloadDriver is not
> unregistered from DriverManager. However it does not support any future
> loading of connections so it has no value in remaining registered. Since the
> DriverManager class will remain forever, this means the Derby code will
> remain forever in the JVM, even if Derby was loaded by a separate class
> loader.
> Regression from 10.1 since before the AutoloadedDriver the internal driver
> did unregister itself from the DriverManager on a shutdown.
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