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https://issues.apache.org/jira/browse/FLINK-16408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17180929#comment-17180929
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Echo Lee commented on FLINK-16408:
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[~trohrmann] [~sewen] I also found another phenomenon. We submit batch jobs
every five minutes, which eventually leads to Metaspace oom, as if GC did not
happen. By the way, I'm currently using jdk11, and GC is using g1gc.
> Bind user code class loader to lifetime of a slot
> -------------------------------------------------
>
> Key: FLINK-16408
> URL: https://issues.apache.org/jira/browse/FLINK-16408
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Coordination
> Affects Versions: 1.9.2, 1.10.0
> Reporter: Till Rohrmann
> Assignee: Till Rohrmann
> Priority: Critical
> Labels: pull-request-available
> Fix For: 1.11.0
>
> Attachments: Metaspace-OOM.png
>
>
> In order to avoid class leaks due to creating multiple user code class
> loaders and loading class multiple times in a recovery case, I would suggest
> to bind the lifetime of a user code class loader to the lifetime of a slot.
> More precisely, the user code class loader should live at most as long as the
> slot which is using it.
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