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https://issues.apache.org/jira/browse/KAFKA-8802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16907477#comment-16907477
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ASF GitHub Bot commented on KAFKA-8802:
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vvcephei commented on pull request #7213: KAFKA-8802: ConcurrentSkipListMap
shows performance regression in cache and in-memory store
URL: https://github.com/apache/kafka/pull/7213
* replace ConcurrentSkipListMap
* synchronize
See #7212
### Committer Checklist (excluded from commit message)
- [ ] Verify design and implementation
- [ ] Verify test coverage and CI build status
- [ ] Verify documentation (including upgrade notes)
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> ConcurrentSkipListMap shows performance regression in cache and in-memory
> store
> -------------------------------------------------------------------------------
>
> Key: KAFKA-8802
> URL: https://issues.apache.org/jira/browse/KAFKA-8802
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 2.3.0
> Reporter: Sophie Blee-Goldman
> Priority: Major
> Fix For: 2.4.0, 2.3.1
>
>
> A significant performance regression was seen between 2.2 and 2.3. For
> in-memory stores, about half of it was improved by removing the
> ConcurrentSkipListMap.
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