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https://issues.apache.org/jira/browse/DERBY-6440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13856303#comment-13856303
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ASF subversion and git services commented on DERBY-6440:
--------------------------------------------------------
Commit 1553269 from [~rhillegas] in branch 'code/trunk'
[ https://svn.apache.org/r1553269 ]
DERBY-6440: Drop connection to foreign database when foreignViews optional tool
is unloaded.
> Connections opened by ForeignTableVTI never get released
> --------------------------------------------------------
>
> Key: DERBY-6440
> URL: https://issues.apache.org/jira/browse/DERBY-6440
> Project: Derby
> Issue Type: Bug
> Components: Tools
> Affects Versions: 10.11.0.0
> Reporter: Knut Anders Hatlen
> Assignee: Rick Hillegas
> Attachments: derby-6440-01-aa-dropConnectionOnUnload.diff
>
>
> I noticed during a run of suites.All that one database instance never got
> garbage collected, even after it had been shut down. It turned out it could
> not get garbage collected because it was still referenced from the static
> HashMap _connections in ForeignTableVTI. Looking closer at ForeignTableVTI,
> it looks as if it only calls put() and get() on the HashMap, never remove(),
> so its memory footprint will keep increasing as it is used.
> It would be good to have some way (preferably automatic) of releasing the
> resources held by ForeignTableVTI when they are no longer needed.
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