[
https://issues.apache.org/jira/browse/KAFKA-7192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16560326#comment-16560326
]
ASF GitHub Bot commented on KAFKA-7192:
---------------------------------------
guozhangwang opened a new pull request #5430: KAFKA-7192 Follow-up: update
checkpoint to the reset beginning offset
URL: https://github.com/apache/kafka/pull/5430
### Committer Checklist (excluded from commit message)
- [ ] Verify design and implementation
- [ ] Verify test coverage and CI build status
- [ ] Verify documentation (including upgrade notes)
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
> State-store can desynchronise with changelog
> --------------------------------------------
>
> Key: KAFKA-7192
> URL: https://issues.apache.org/jira/browse/KAFKA-7192
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 1.1.1
> Reporter: Jon Bates
> Assignee: Guozhang Wang
> Priority: Critical
> Labels: bugs
> Fix For: 2.1.0
>
>
> n.b. this bug has been verified with exactly-once processing enabled
> Consider the following scenario:
> * A record, N is read into a Kafka topology
> * the state store is updated
> * the topology crashes
> h3. *Expected behaviour:*
> # Node is restarted
> # Offset was never updated, so record N is reprocessed
> # State-store is reset to position N-1
> # Record is reprocessed
> h3. *Actual Behaviour*
> # Node is restarted
> # Record N is reprocessed (good)
> # The state store has the state from the previous processing
> I'd consider this a corruption of the state-store, hence the critical
> Priority, although High may be more appropriate.
> I wrote a proof-of-concept here, which demonstrates the problem on Linux:
> [https://github.com/spadger/kafka-streams-sad-state-store]
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
