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https://issues.apache.org/jira/browse/FLINK-32746?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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xiangyu feng updated FLINK-32746:
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Description:
In a OLAP session cluster, a TM need to frequently create new classloaders and
generate new classes. These classes will be accumulated in metaspace. When
metaspace data usage reaches a threshold, a FullGC with a long time
Stop-the-World will be triggered. Currently, both SerialGC, ParallelGC and G1GC
are doing Stop-the-World class unloading. Only ZGC support concurrent class
unload
> Enable ZGC in JDK17 to solve long time class unloading STW during fullgc
> ------------------------------------------------------------------------
>
> Key: FLINK-32746
> URL: https://issues.apache.org/jira/browse/FLINK-32746
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / Runtime
> Reporter: xiangyu feng
> Priority: Major
>
> In a OLAP session cluster, a TM need to frequently create new classloaders
> and generate new classes. These classes will be accumulated in metaspace.
> When metaspace data usage reaches a threshold, a FullGC with a long time
> Stop-the-World will be triggered. Currently, both SerialGC, ParallelGC and
> G1GC are doing Stop-the-World class unloading. Only ZGC support concurrent
> class unload
>
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