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https://issues.apache.org/jira/browse/KAFKA-7296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16581680#comment-16581680
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ASF GitHub Bot commented on KAFKA-7296:
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hachikuji opened a new pull request #5514: KAFKA-7296; Handle coordinator
loading error in TxnOffsetCommit
URL: https://github.com/apache/kafka/pull/5514
We should check TxnOffsetCommit responses for the
COORDINATOR_LOADING_IN_PROGRESS error code and retry if we see it.
Additionally, if we encounter an abortable error, we need to ensure that
pending transaction offset commits are cleared.
### 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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> Producer should handle COORDINATOR_LOADING error in TxnOffsetCommit
> -------------------------------------------------------------------
>
> Key: KAFKA-7296
> URL: https://issues.apache.org/jira/browse/KAFKA-7296
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 2.0.0
> Reporter: Jason Gustafson
> Assignee: Jason Gustafson
> Priority: Major
> Fix For: 2.0.1
>
>
> The producer should check for the COORDINATOR_LOADING error when handling the
> TxnOffsetCommit response. We fixed the logic in GroupCoordinator to correctly
> check for offset loading in https://github.com/apache/kafka/pull/4788. Prior
> to this fix, it was not possible to see this error, so we were able to get
> away with not having the check.
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