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https://issues.apache.org/jira/browse/FLINK-27466?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chesnay Schepler closed FLINK-27466.
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Resolution: Fixed
master: 99c9c2ee3d4cf15319ca9f97b61b18f3f3b23210
> JDBC metaspace leak fix is misleading
> -------------------------------------
>
> Key: FLINK-27466
> URL: https://issues.apache.org/jira/browse/FLINK-27466
> Project: Flink
> Issue Type: Bug
> Components: Connectors / JDBC, Documentation
> Reporter: Chesnay Schepler
> Assignee: Chesnay Schepler
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.16.0
>
>
> {code}
> To ensure that these classes are only loaded once you should either add the
> driver jars to Flink’s lib/ folder, or add the driver classes to the list of
> parent-first loaded class via classloader.parent-first-patterns-additional.
> {code}
> This reads as if adding the driver to
> classloader.parent-first-patterns-additional can solve the issue in all
> cases, but this only works if the driver is already in lib/.
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