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https://issues.apache.org/jira/browse/DERBY-4054?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12673019#action_12673019
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Kathey Marsden commented on DERBY-4054:
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Committed a test that demonstrates the issue with revision 743820
store/ClobReclamationTest.xtestMultiThreadedUpdateTableLocking()
Enable this test to reproduce the problem.
> Multithreaded clob update with exclusive table locking causes table growth
> that is not reclaimed
> ------------------------------------------------------------------------------------------------
>
> Key: DERBY-4054
> URL: https://issues.apache.org/jira/browse/DERBY-4054
> Project: Derby
> Issue Type: Bug
> Components: Store
> Affects Versions: 10.5.0.0
> Reporter: Kathey Marsden
>
> If I do a multithreaded clob update which gets an exclusive table lock on the
> table, space will not be reclaimed. This case is similar to DERBY-4050
> except that the test gets an exclusive table lock and the growth happens
> whether or not the update is synchronized. I will add a disabled test for
> this to ClobReclamationTest and reference this bug.
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