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https://issues.apache.org/jira/browse/KAFKA-8274?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16824252#comment-16824252
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Sönke Liebau commented on KAFKA-8274:
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hi [~hrishi_dypim], can you add some more detail around this issue if you have
it?
In principle this is something that is extensively tested for and should not
occur.
A few questions that come to mind:
Was this a planned restart or did the cluster crash?
Was the consumer group active immediately before the restart or was it inactive
for a while?
What clients are you using?
How many messages were replayed?
> Old Committed messages got replayed after Kafka cluster Restart
> ---------------------------------------------------------------
>
> Key: KAFKA-8274
> URL: https://issues.apache.org/jira/browse/KAFKA-8274
> Project: Kafka
> Issue Type: Bug
> Components: consumer
> Affects Versions: 1.0.0
> Environment: PROD
> Reporter: Hrishikesh tiwary
> Priority: Major
>
> I got a very serious issue in PROD Env . after restarting the Kafka cluster
> my old committed messages by same group if got replayed.
> Its very shocking that if messages are already committed by a group id then
> how comes same messages will be replayed by same group id.
> I have a consumer which runs in web based application, at start up it starts
> the consumer by providing a group id. there is only one group id for the
> given web app.
>
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