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https://issues.apache.org/jira/browse/FLINK-19259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17250420#comment-17250420
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Robert Metzger commented on FLINK-19259:
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Resolved in release-1.12:
https://github.com/apache/flink/commit/d1cf6c408a229f3fe23ddeda52bbdded0d2d4c71
> Use classloader release hooks with Kinesis producer to avoid metaspace leak
> ---------------------------------------------------------------------------
>
> Key: FLINK-19259
> URL: https://issues.apache.org/jira/browse/FLINK-19259
> Project: Flink
> Issue Type: Improvement
> Components: Connectors / Kinesis
> Reporter: Robert Metzger
> Assignee: Robert Metzger
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.13.0
>
>
> FLINK-17554 introduced hooks for clearing references before unloading a
> classloader.
> The Kinesis Producer library is currently preventing the usercode classloader
> from being unloaded because it keeps references around.
> This ticket is to use the hooks with the Kinesis producer.
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