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https://issues.apache.org/jira/browse/SAMZA-807?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15243712#comment-15243712
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Tao Feng commented on SAMZA-807:
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Hi [~jmakes], the issue has been around some times, hence I am not exactly sure
about the context. But the issue I think is that once you change the grouper,
the first instance with the old grouper won't be able to start running. I will
let my coworker(Zhenyu Cai) to comment.
> Need a configuration variable to ignore SystemStreamPartitionGrouperFactory
> changes in checkpoint topic
> -------------------------------------------------------------------------------------------------------
>
> Key: SAMZA-807
> URL: https://issues.apache.org/jira/browse/SAMZA-807
> Project: Samza
> Issue Type: Bug
> Affects Versions: 0.10.0
> Reporter: Yi Pan (Data Infrastructure)
> Assignee: Tao Feng
> Attachments: SAMZA-807.1.patch
>
>
> We have use cases where the user implemented a customized
> SystemStreamPartitionGrouperFactory and later removed it. We should provide a
> configuration to ignore the validation exception in
> KafkaCheckpointLogKey.fromBytes().
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