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https://issues.apache.org/jira/browse/KAFKA-8298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16827322#comment-16827322
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ASF GitHub Bot commented on KAFKA-8298:
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bbejeck commented on pull request #6643: KAFKA-8298: Fix possible concurrent
modification exception
URL: https://github.com/apache/kafka/pull/6643
When processing multiple key-changing operations during the optimization
phase a `ConcurrentModificationException` is possible. This PR fixes that
situation.
I've added a test that fails without this fix.
### 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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> ConcurrentModificationException Possible when optimizing for repartition nodes
> ------------------------------------------------------------------------------
>
> Key: KAFKA-8298
> URL: https://issues.apache.org/jira/browse/KAFKA-8298
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 2.1.0, 2.2.0, 2.3.0
> Reporter: Bill Bejeck
> Assignee: Bill Bejeck
> Priority: Major
> Fix For: 2.3.0, 2.1.2, 2.2.1
>
>
> As indicated in the title
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