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https://issues.apache.org/jira/browse/DERBY-5375?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dag H. Wanvik updated DERBY-5375:
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Bug behavior facts: [Seen in production]
> Memory "leak" when setting a query timeout
> ------------------------------------------
>
> Key: DERBY-5375
> URL: https://issues.apache.org/jira/browse/DERBY-5375
> Project: Derby
> Issue Type: Bug
> Components: JDBC
> Affects Versions: 10.8.1.2
> Reporter: Thomas Brandl
>
> When setting a query timeout, a new CancelQueryTask is created and scheduled.
> This CancelQueryTask is still held in the java.util.Timer class's task queue
> even when the query is already finished until the query timeout is reached.
> For example, if i set a query timeout of 2h using
> statement.setQueryTimeout(7200) this means that the CancelQueryTask will
> remain for 2 hours even if the query is finished within 1 second. In
> scenarios with high load, this can lead to Out of Memory Situations.
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