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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (DERBY-5316) Unload old JDBC drivers when done with them in the upgrade tests
Date Wed, 13 Jul 2011 12:33:00 GMT

     [ https://issues.apache.org/jira/browse/DERBY-5316?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Knut Anders Hatlen resolved DERBY-5316.
---------------------------------------

          Resolution: Fixed
       Fix Version/s: 10.9.0.0
    Issue & fix info:   (was: [Patch Available])

Committed revision 1145973.

Resolving the issue since all the old engines seem to get garbage collected in my environment
now.

> Unload old JDBC drivers when done with them in the upgrade tests
> ----------------------------------------------------------------
>
>                 Key: DERBY-5316
>                 URL: https://issues.apache.org/jira/browse/DERBY-5316
>             Project: Derby
>          Issue Type: Improvement
>          Components: Test
>            Reporter: Knut Anders Hatlen
>            Assignee: Knut Anders Hatlen
>             Fix For: 10.9.0.0
>
>         Attachments: clear-contextservice.diff, clear-threadlocal.diff, deregister-check.diff,
deregister-v2.diff, deregister.diff
>
>
> Discussed in this thread on derby-dev: http://mail-archives.apache.org/mod_mbox/db-derby-dev/201107.mbox/%3C4E146309.3000906@gmail.com%3E
> After we're done testing an old version in the upgrade tests, its classes are still loaded
in the JVM because the old driver is referenced in DriverManager. We should find a way to
unload the old drivers so that the memory usage of the upgrade tests is reduced. Now we typically
need to run with -XX:MaxPermSize=200M or similar options to work around this issue.

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