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https://issues.apache.org/jira/browse/KAFKA-7021?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16508982#comment-16508982
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ASF GitHub Bot commented on KAFKA-7021:
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guozhangwang opened a new pull request #5195: KAFKA-7021: Update upgrade guide
section for reusing source topic
URL: https://github.com/apache/kafka/pull/5195
### 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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> Source KTable checkpoint is not correct
> ---------------------------------------
>
> Key: KAFKA-7021
> URL: https://issues.apache.org/jira/browse/KAFKA-7021
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 0.10.0.0
> Reporter: Matthias J. Sax
> Assignee: Guozhang Wang
> Priority: Major
> Fix For: 0.10.2.2, 2.0.0, 0.11.0.3, 1.0.2, 1.1.1
>
>
> Kafka Streams treats source KTables,ie, table created via `builder.table()`,
> differently. Instead of creating a changelog topic, the original source topic
> is use to avoid unnecessary data redundancy.
> However, Kafka Streams does not write a correct local state checkpoint file.
> This results in unnecessary state restore after a rebalance. Instead of the
> latest committed offset, the latest restored offset is written into the
> checkpoint file in `ProcessorStateManager#close()`
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