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https://issues.apache.org/jira/browse/KAFKA-20726?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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tony tang updated KAFKA-20726:
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Description:
{{KRaftControlRecordStateMachine}} uses {{DefaultSupplier}} for its entire
lifetime. {{DefaultSupplier}} caches one buffer per distinct capacity and never
evicts, causing unbounded memory growth.
We want to fix by not reusing the BufferSupplier in kraft state machine
was:
{{KRaftControlRecordStateMachine}} uses {{DefaultSupplier}} for its entire
lifetime. {{DefaultSupplier}} caches one buffer per distinct capacity and never
evicts, causing unbounded memory growth as {{__cluster_metadata}} batches vary
in size.
We want to fix by not reusing the BufferSupplier in kraft state machine
> Don't reuse the BufferSupplier in kraft state machine
> -----------------------------------------------------
>
> Key: KAFKA-20726
> URL: https://issues.apache.org/jira/browse/KAFKA-20726
> Project: Kafka
> Issue Type: Bug
> Components: kraft
> Reporter: tony tang
> Assignee: tony tang
> Priority: Major
>
> {{KRaftControlRecordStateMachine}} uses {{DefaultSupplier}} for its entire
> lifetime. {{DefaultSupplier}} caches one buffer per distinct capacity and
> never evicts, causing unbounded memory growth.
> We want to fix by not reusing the BufferSupplier in kraft state machine
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