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https://issues.apache.org/jira/browse/FLINK-21419?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17300006#comment-17300006
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Xintong Song commented on FLINK-21419:
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Thanks for the notice, [~kezhuw].
Double-freeing of native memory should indeed be avoided. However, I'm not sure
we want to strictly forbid a segment from being freed multiple times. I think
it might be good enough to ensure that the {{cleaner}} is called only once in a
thread save way.
I've opened a PR for FLINK-21728.
> Remove GC cleaner mechanism for unsafe memory segments
> ------------------------------------------------------
>
> Key: FLINK-21419
> URL: https://issues.apache.org/jira/browse/FLINK-21419
> Project: Flink
> Issue Type: Sub-task
> Components: Runtime / Coordination
> Reporter: Xintong Song
> Assignee: Nicholas Jiang
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.13.0
>
>
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